| // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5 |
| // RUN: %clang_cc1 -std=c11 -triple=x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefix=LINUX |
| // RUN: %clang_cc1 -std=c11 -triple=x86_64-pc-windows-msvc -emit-llvm -o - %s | FileCheck %s --check-prefix=WINDOWS |
| |
| struct Empty {}; |
| |
| // LINUX-LABEL: define dso_local void @testEmpty( |
| // LINUX-SAME: ptr noundef [[E:%.*]]) #[[ATTR0:[0-9]+]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[E_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[E]], ptr [[E_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[E_ADDR]], align 8 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testEmpty(ptr noundef %e) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %e.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %e, ptr %e.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %e.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 2 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testEmpty(struct Empty *e) { |
| // Emtpy struct is empty in C in Itanium ABI, no padding |
| // Emtpy struct has 4 bytes in C in clang's MSVC ABI |
| __builtin_clear_padding(e); |
| } |
| |
| |
| // LINUX-LABEL: define dso_local void @testPrimitiveNoPadding( |
| // LINUX-SAME: ptr noundef [[I:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[I_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[I]], ptr [[I_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[I_ADDR]], align 8 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testPrimitiveNoPadding(ptr noundef %i) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %i.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %i, ptr %i.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %i.addr, align 8 |
| // WINDOWS-NEXT: ret void |
| // |
| void testPrimitiveNoPadding(int *i) { |
| // This should not clear any padding, since int has no padding. |
| __builtin_clear_padding(i); |
| } |
| |
| |
| // LINUX-LABEL: define dso_local void @testPrimitiveLongDouble( |
| // LINUX-SAME: ptr noundef [[LD:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[LD_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[LD]], ptr [[LD_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[LD_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 10 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 12 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 4 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testPrimitiveLongDouble(ptr noundef %ld) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %ld.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %ld, ptr %ld.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %ld.addr, align 8 |
| // WINDOWS-NEXT: ret void |
| // |
| void testPrimitiveLongDouble(long double *ld) { |
| // padding [10, 15] on x86 |
| __builtin_clear_padding(ld); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testBitInt( |
| // LINUX-SAME: ptr noundef [[BI:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[BI_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[BI]], ptr [[BI_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[BI_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 12 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 4 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], 1 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 4 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testBitInt(ptr noundef %bi) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %bi.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %bi, ptr %bi.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %bi.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 12 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 4 |
| // WINDOWS-NEXT: %3 = and i8 %2, 1 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 4 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 13 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 14 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 2 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 15 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testBitInt(_BitInt(97) *bi) { |
| // Storage is widened to 128 bits; clear bits [97, 128). |
| __builtin_clear_padding(bi); |
| } |
| |
| |
| // LINUX-LABEL: define dso_local void @testPrimitiveComplexLongDouble( |
| // LINUX-SAME: ptr noundef [[C:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[C_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[C]], ptr [[C_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[C_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 10 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 12 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 4 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 26 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 2 |
| // LINUX-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[TMP0]], i32 27 |
| // LINUX-NEXT: store i8 0, ptr [[TMP8]], align 1 |
| // LINUX-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[TMP0]], i32 28 |
| // LINUX-NEXT: store i8 0, ptr [[TMP9]], align 4 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP0]], i32 29 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 1 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[TMP0]], i32 30 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 2 |
| // LINUX-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[TMP0]], i32 31 |
| // LINUX-NEXT: store i8 0, ptr [[TMP12]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testPrimitiveComplexLongDouble(ptr noundef %c) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %c.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %c, ptr %c.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %c.addr, align 8 |
| // WINDOWS-NEXT: ret void |
| // |
| void testPrimitiveComplexLongDouble(_Complex long double *c) { |
| // padding [10, 15] and [26, 31] on x86 |
| __builtin_clear_padding(c); |
| } |
| |
| union U1 { |
| int i; |
| char c; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnionDifferentLength( |
| // LINUX-SAME: ptr noundef [[U:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[U_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[U]], ptr [[U_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[U_ADDR]], align 8 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnionDifferentLength(ptr noundef %u) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %u.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %u, ptr %u.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %u.addr, align 8 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnionDifferentLength(union U1 *u) { |
| // This should not clear the object representation bits of the non-active member. |
| __builtin_clear_padding(u); |
| } |
| |
| struct S { |
| __attribute__((aligned(8))) char c1; |
| }; |
| |
| union U2 { |
| struct S s1; |
| char c2; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnionTailPaddingOfLongestMember( |
| // LINUX-SAME: ptr noundef [[U:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[U_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[U]], ptr [[U_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[U_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 2 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 2 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 4 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 4 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 6 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 2 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnionTailPaddingOfLongestMember(ptr noundef %u) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %u.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %u, ptr %u.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %u.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 2 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 2 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 4 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 4 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 1 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 6 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 2 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnionTailPaddingOfLongestMember(union U2 *u) { |
| // This should clear the tail padding of the longest member. |
| // [1 - 7] |
| __builtin_clear_padding(u); |
| } |
| |
| |
| struct __attribute__((aligned(4))) Foo { |
| char a; |
| _Alignas(2) char b; |
| }; |
| |
| struct __attribute__((aligned(4))) Bar { |
| char c; |
| _Alignas(2) char d; |
| }; |
| |
| struct __attribute__((aligned(4))) Baz { |
| struct Foo foo; |
| char e; |
| struct Bar bar; |
| }; |
| |
| // Baz structure: |
| // "a", PAD_1, "b", PAD_2, "c", PAD_3, PAD_4, PAD_5, "c", PAD_6, "d", PAD_7 |
| // %struct.Baz = type { %struct.Foo, i8, [3 x i8], %struct.Bar } |
| // %struct.Foo = type { i8, i8, i8, i8 } |
| // %struct.Bar = type { i8, i8, i8, i8 } |
| |
| // LINUX-LABEL: define dso_local void @testStructPaddingInBetweenMembers( |
| // LINUX-SAME: ptr noundef [[BAZ:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[BAZ_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[BAZ]], ptr [[BAZ_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[BAZ_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 6 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 2 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 9 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testStructPaddingInBetweenMembers(ptr noundef %baz) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %baz.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %baz, ptr %baz.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %baz.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 6 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 2 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 1 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 9 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 11 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testStructPaddingInBetweenMembers(struct Baz *baz) { |
| // this should clear all the padding in between various members |
| __builtin_clear_padding(baz); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testStructVolatile( |
| // LINUX-SAME: ptr noundef [[BAZ:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[BAZ_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[BAZ]], ptr [[BAZ_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[BAZ_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 6 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 2 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 9 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testStructVolatile(ptr noundef %baz) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %baz.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %baz, ptr %baz.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %baz.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 6 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 2 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 1 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 9 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 11 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testStructVolatile(volatile struct Baz *baz) { |
| // this should clear all the padding in between various members |
| __builtin_clear_padding(baz); |
| } |
| |
| |
| |
| |
| struct S3 { |
| long double l; |
| _Bool b; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testStructWithLongDouble( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 10 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 12 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 4 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 17 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 1 |
| // LINUX-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[TMP0]], i32 18 |
| // LINUX-NEXT: store i8 0, ptr [[TMP8]], align 2 |
| // LINUX-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[TMP0]], i32 19 |
| // LINUX-NEXT: store i8 0, ptr [[TMP9]], align 1 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP0]], i32 20 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 4 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[TMP0]], i32 21 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 1 |
| // LINUX-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[TMP0]], i32 22 |
| // LINUX-NEXT: store i8 0, ptr [[TMP12]], align 2 |
| // LINUX-NEXT: [[TMP13:%.*]] = getelementptr i8, ptr [[TMP0]], i32 23 |
| // LINUX-NEXT: store i8 0, ptr [[TMP13]], align 1 |
| // LINUX-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[TMP0]], i32 24 |
| // LINUX-NEXT: store i8 0, ptr [[TMP14]], align 8 |
| // LINUX-NEXT: [[TMP15:%.*]] = getelementptr i8, ptr [[TMP0]], i32 25 |
| // LINUX-NEXT: store i8 0, ptr [[TMP15]], align 1 |
| // LINUX-NEXT: [[TMP16:%.*]] = getelementptr i8, ptr [[TMP0]], i32 26 |
| // LINUX-NEXT: store i8 0, ptr [[TMP16]], align 2 |
| // LINUX-NEXT: [[TMP17:%.*]] = getelementptr i8, ptr [[TMP0]], i32 27 |
| // LINUX-NEXT: store i8 0, ptr [[TMP17]], align 1 |
| // LINUX-NEXT: [[TMP18:%.*]] = getelementptr i8, ptr [[TMP0]], i32 28 |
| // LINUX-NEXT: store i8 0, ptr [[TMP18]], align 4 |
| // LINUX-NEXT: [[TMP19:%.*]] = getelementptr i8, ptr [[TMP0]], i32 29 |
| // LINUX-NEXT: store i8 0, ptr [[TMP19]], align 1 |
| // LINUX-NEXT: [[TMP20:%.*]] = getelementptr i8, ptr [[TMP0]], i32 30 |
| // LINUX-NEXT: store i8 0, ptr [[TMP20]], align 2 |
| // LINUX-NEXT: [[TMP21:%.*]] = getelementptr i8, ptr [[TMP0]], i32 31 |
| // LINUX-NEXT: store i8 0, ptr [[TMP21]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testStructWithLongDouble(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 9 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 10 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 2 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 11 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 12 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 4 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 13 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 1 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 14 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 2 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 15 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testStructWithLongDouble(struct S3 *s) { |
| // "long double data[0-9]", PAD [10-15], "b", PAD [17-31] |
| __builtin_clear_padding(s); |
| } |
| |
| struct S11 { |
| // will usually occupy 2 bytes: |
| unsigned char b1 : 3; // 1st 3 bits (in 1st byte) are b1 |
| unsigned char b2 : 2; // next 2 bits (in 1st byte). The rest bits in byte 1 are unused |
| unsigned char b3 : 6; // 6 bits for b3 - doesn't fit into the 1st byte => starts a 2nd |
| unsigned char b4 : 2; // 2 bits for b4 - next (and final) bits in the 2nd byte |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testBitFields( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], 31 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testBitFields(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 1 |
| // WINDOWS-NEXT: %3 = and i8 %2, 31 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testBitFields(struct S11 *s) { |
| // "b1" [0-2], "b2" [3-4], PAD [5-7], "b3" [8-13], "b4" [14-15] |
| // to clear 5-7, we should AND 0b00011111 (31) |
| __builtin_clear_padding(s); |
| } |
| |
| |
| // LINUX-LABEL: define dso_local void @testArrayNoPadding( |
| // LINUX-SAME: ) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[I:%.*]] = alloca [4 x i32], align 16 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testArrayNoPadding() #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %i = alloca [4 x i32], align 4 |
| // WINDOWS-NEXT: ret void |
| // |
| void testArrayNoPadding(void) { |
| int i[4]; |
| // there is no padding in the array. |
| __builtin_clear_padding(&i); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testArrayLongDouble( |
| // LINUX-SAME: ) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[LD:%.*]] = alloca [2 x x86_fp80], align 16 |
| // LINUX-NEXT: [[TMP0:%.*]] = getelementptr i8, ptr [[LD]], i32 10 |
| // LINUX-NEXT: store i8 0, ptr [[TMP0]], align 2 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[LD]], i32 11 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[LD]], i32 12 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 4 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[LD]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[LD]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 2 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[LD]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[LD]], i32 26 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 2 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[LD]], i32 27 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 1 |
| // LINUX-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[LD]], i32 28 |
| // LINUX-NEXT: store i8 0, ptr [[TMP8]], align 4 |
| // LINUX-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[LD]], i32 29 |
| // LINUX-NEXT: store i8 0, ptr [[TMP9]], align 1 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[LD]], i32 30 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 2 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[LD]], i32 31 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testArrayLongDouble() #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %ld = alloca [2 x double], align 8 |
| // WINDOWS-NEXT: ret void |
| // |
| void testArrayLongDouble() { |
| // long double 0, [0-9] PAD [10-15] |
| // long double 1, [16-25] PAD [26-31] |
| long double ld[2]; |
| __builtin_clear_padding(&ld); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testArrayOfStruct( |
| // LINUX-SAME: ) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S:%.*]] = alloca [2 x [[STRUCT_S_LOCAL:%.*]]], align 16 |
| // LINUX-NEXT: [[TMP0:%.*]] = getelementptr i8, ptr [[S]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP0]], align 1 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[S]], i32 6 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[S]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[S]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[S]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 2 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[S]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[S]], i32 21 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[S]], i32 22 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 2 |
| // LINUX-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[S]], i32 23 |
| // LINUX-NEXT: store i8 0, ptr [[TMP8]], align 1 |
| // LINUX-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[S]], i32 29 |
| // LINUX-NEXT: store i8 0, ptr [[TMP9]], align 1 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[S]], i32 30 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 2 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[S]], i32 31 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testArrayOfStruct() #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s = alloca [2 x %struct.S_local], align 4 |
| // WINDOWS-NEXT: %0 = getelementptr i8, ptr %s, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %0, align 1 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %s, i32 6 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 2 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %s, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %s, i32 13 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %s, i32 14 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 2 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %s, i32 15 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 1 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %s, i32 21 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %s, i32 22 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 2 |
| // WINDOWS-NEXT: %8 = getelementptr i8, ptr %s, i32 23 |
| // WINDOWS-NEXT: store i8 0, ptr %8, align 1 |
| // WINDOWS-NEXT: %9 = getelementptr i8, ptr %s, i32 29 |
| // WINDOWS-NEXT: store i8 0, ptr %9, align 1 |
| // WINDOWS-NEXT: %10 = getelementptr i8, ptr %s, i32 30 |
| // WINDOWS-NEXT: store i8 0, ptr %10, align 2 |
| // WINDOWS-NEXT: %11 = getelementptr i8, ptr %s, i32 31 |
| // WINDOWS-NEXT: store i8 0, ptr %11, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testArrayOfStruct(void) { |
| struct S_local { |
| int i1; |
| char c1; |
| int i2; |
| char c2; |
| }; |
| |
| // S[0].i1 [0-3], S[0].c1 [4], PAD [5-7], |
| // S[0].i2 [8-11], S[0].c2 [12], PAD [13-15], |
| // S[1].i1 [16-19], S[1].c1 [20], PAD [21-23], |
| // S[1].i2 [24-27], S[1].c2 [28], PAD [29-31] |
| |
| struct S_local s[2]; |
| __builtin_clear_padding(&s); |
| } |
| |
| struct ArrOfStructsWithPadding { |
| struct Bar bars[2]; |
| }; |
| |
| // ArrOfStructsWithPadding structure: |
| // "c" (1), PAD_1, "d" (1), PAD_2, "c" (2), PAD_3, "d" (2), PAD_4 |
| // %struct.ArrOfStructsWithPadding = type { [2 x %struct.Bar] } |
| |
| // LINUX-LABEL: define dso_local void @testArrOfStructsWithPadding( |
| // LINUX-SAME: ptr noundef [[ARR:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[ARR_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[ARR]], ptr [[ARR_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARR_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testArrOfStructsWithPadding(ptr noundef %arr) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %arr.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %arr, ptr %arr.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %arr.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testArrOfStructsWithPadding(struct ArrOfStructsWithPadding *arr) { |
| __builtin_clear_padding(arr); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testAtomic( |
| // LINUX-SAME: ptr noundef [[BAR:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[BAR_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[BAR]], ptr [[BAR_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[BAR_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testAtomic(ptr noundef %bar) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %bar.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %bar, ptr %bar.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %bar.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 1 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testAtomic(_Atomic(struct Bar)* bar) { |
| __builtin_clear_padding(bar); |
| } |
| |
| typedef float Float3Vec __attribute__((ext_vector_type(3))); |
| typedef long double LongDouble3Vec __attribute__((ext_vector_type(3))); |
| |
| // LINUX-LABEL: define dso_local void @testAttributedType( |
| // LINUX-SAME: ptr noundef [[V:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[V_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[V]], ptr [[V_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[V_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 12 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 4 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 13 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 14 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 2 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 15 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testAttributedType(ptr noundef %v) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %v.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %v, ptr %v.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %v.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 12 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 4 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 13 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 14 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 2 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 15 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testAttributedType(Float3Vec* v) { |
| __builtin_clear_padding(v); |
| } |
| |
| // LINUX-LABEL: define dso_local void @testAttributedLongDoubleType( |
| // LINUX-SAME: ptr noundef [[V:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[V_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[V]], ptr [[V_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[V_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 30 |
| // LINUX-NEXT: store i8 0, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[TMP0]], i32 31 |
| // LINUX-NEXT: store i8 0, ptr [[TMP2]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP0]], i32 32 |
| // LINUX-NEXT: store i8 0, ptr [[TMP3]], align 32 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 33 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 34 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 35 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 36 |
| // LINUX-NEXT: store i8 0, ptr [[TMP7]], align 4 |
| // LINUX-NEXT: [[TMP8:%.*]] = getelementptr i8, ptr [[TMP0]], i32 37 |
| // LINUX-NEXT: store i8 0, ptr [[TMP8]], align 1 |
| // LINUX-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[TMP0]], i32 38 |
| // LINUX-NEXT: store i8 0, ptr [[TMP9]], align 2 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP0]], i32 39 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 1 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[TMP0]], i32 40 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 8 |
| // LINUX-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[TMP0]], i32 41 |
| // LINUX-NEXT: store i8 0, ptr [[TMP12]], align 1 |
| // LINUX-NEXT: [[TMP13:%.*]] = getelementptr i8, ptr [[TMP0]], i32 42 |
| // LINUX-NEXT: store i8 0, ptr [[TMP13]], align 2 |
| // LINUX-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[TMP0]], i32 43 |
| // LINUX-NEXT: store i8 0, ptr [[TMP14]], align 1 |
| // LINUX-NEXT: [[TMP15:%.*]] = getelementptr i8, ptr [[TMP0]], i32 44 |
| // LINUX-NEXT: store i8 0, ptr [[TMP15]], align 4 |
| // LINUX-NEXT: [[TMP16:%.*]] = getelementptr i8, ptr [[TMP0]], i32 45 |
| // LINUX-NEXT: store i8 0, ptr [[TMP16]], align 1 |
| // LINUX-NEXT: [[TMP17:%.*]] = getelementptr i8, ptr [[TMP0]], i32 46 |
| // LINUX-NEXT: store i8 0, ptr [[TMP17]], align 2 |
| // LINUX-NEXT: [[TMP18:%.*]] = getelementptr i8, ptr [[TMP0]], i32 47 |
| // LINUX-NEXT: store i8 0, ptr [[TMP18]], align 1 |
| // LINUX-NEXT: [[TMP19:%.*]] = getelementptr i8, ptr [[TMP0]], i32 48 |
| // LINUX-NEXT: store i8 0, ptr [[TMP19]], align 16 |
| // LINUX-NEXT: [[TMP20:%.*]] = getelementptr i8, ptr [[TMP0]], i32 49 |
| // LINUX-NEXT: store i8 0, ptr [[TMP20]], align 1 |
| // LINUX-NEXT: [[TMP21:%.*]] = getelementptr i8, ptr [[TMP0]], i32 50 |
| // LINUX-NEXT: store i8 0, ptr [[TMP21]], align 2 |
| // LINUX-NEXT: [[TMP22:%.*]] = getelementptr i8, ptr [[TMP0]], i32 51 |
| // LINUX-NEXT: store i8 0, ptr [[TMP22]], align 1 |
| // LINUX-NEXT: [[TMP23:%.*]] = getelementptr i8, ptr [[TMP0]], i32 52 |
| // LINUX-NEXT: store i8 0, ptr [[TMP23]], align 4 |
| // LINUX-NEXT: [[TMP24:%.*]] = getelementptr i8, ptr [[TMP0]], i32 53 |
| // LINUX-NEXT: store i8 0, ptr [[TMP24]], align 1 |
| // LINUX-NEXT: [[TMP25:%.*]] = getelementptr i8, ptr [[TMP0]], i32 54 |
| // LINUX-NEXT: store i8 0, ptr [[TMP25]], align 2 |
| // LINUX-NEXT: [[TMP26:%.*]] = getelementptr i8, ptr [[TMP0]], i32 55 |
| // LINUX-NEXT: store i8 0, ptr [[TMP26]], align 1 |
| // LINUX-NEXT: [[TMP27:%.*]] = getelementptr i8, ptr [[TMP0]], i32 56 |
| // LINUX-NEXT: store i8 0, ptr [[TMP27]], align 8 |
| // LINUX-NEXT: [[TMP28:%.*]] = getelementptr i8, ptr [[TMP0]], i32 57 |
| // LINUX-NEXT: store i8 0, ptr [[TMP28]], align 1 |
| // LINUX-NEXT: [[TMP29:%.*]] = getelementptr i8, ptr [[TMP0]], i32 58 |
| // LINUX-NEXT: store i8 0, ptr [[TMP29]], align 2 |
| // LINUX-NEXT: [[TMP30:%.*]] = getelementptr i8, ptr [[TMP0]], i32 59 |
| // LINUX-NEXT: store i8 0, ptr [[TMP30]], align 1 |
| // LINUX-NEXT: [[TMP31:%.*]] = getelementptr i8, ptr [[TMP0]], i32 60 |
| // LINUX-NEXT: store i8 0, ptr [[TMP31]], align 4 |
| // LINUX-NEXT: [[TMP32:%.*]] = getelementptr i8, ptr [[TMP0]], i32 61 |
| // LINUX-NEXT: store i8 0, ptr [[TMP32]], align 1 |
| // LINUX-NEXT: [[TMP33:%.*]] = getelementptr i8, ptr [[TMP0]], i32 62 |
| // LINUX-NEXT: store i8 0, ptr [[TMP33]], align 2 |
| // LINUX-NEXT: [[TMP34:%.*]] = getelementptr i8, ptr [[TMP0]], i32 63 |
| // LINUX-NEXT: store i8 0, ptr [[TMP34]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testAttributedLongDoubleType(ptr noundef %v) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %v.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %v, ptr %v.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %v.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 24 |
| // WINDOWS-NEXT: store i8 0, ptr %1, align 8 |
| // WINDOWS-NEXT: %2 = getelementptr i8, ptr %0, i32 25 |
| // WINDOWS-NEXT: store i8 0, ptr %2, align 1 |
| // WINDOWS-NEXT: %3 = getelementptr i8, ptr %0, i32 26 |
| // WINDOWS-NEXT: store i8 0, ptr %3, align 2 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 27 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 28 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 4 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 29 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 30 |
| // WINDOWS-NEXT: store i8 0, ptr %7, align 2 |
| // WINDOWS-NEXT: %8 = getelementptr i8, ptr %0, i32 31 |
| // WINDOWS-NEXT: store i8 0, ptr %8, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testAttributedLongDoubleType(LongDouble3Vec *v) { |
| // long double elements occupy [0-9], [16-25], [32-41] on x86. |
| __builtin_clear_padding(v); |
| } |
| |
| struct UnnamedBitfieldSingleBit { |
| unsigned char a : 3; |
| unsigned char : 1; |
| unsigned char b : 4; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnnamedBitfieldSingleBit( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], -9 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnnamedBitfieldSingleBit(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 1 |
| // WINDOWS-NEXT: %3 = and i8 %2, -9 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnnamedBitfieldSingleBit(struct UnnamedBitfieldSingleBit *s) { |
| // byte 0: a[bits 0-2], unnamed[bit 3], b[bits 4-7] |
| // bit 3 must be cleared |
| // Mask: 0b11110111 == -9 |
| __builtin_clear_padding(s); |
| } |
| |
| struct UnnamedBitfieldMiddle { |
| unsigned char a : 3; |
| unsigned char : 2; |
| unsigned char b : 3; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnnamedBitfieldMiddle( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], -25 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnnamedBitfieldMiddle(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 1 |
| // WINDOWS-NEXT: %3 = and i8 %2, -25 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnnamedBitfieldMiddle(struct UnnamedBitfieldMiddle *s) { |
| // byte 0: a[0-2], unnamed[3-4], b[5-7] |
| // bits 3-4 must be cleared |
| // Mask: 0b11100111 == -25 |
| __builtin_clear_padding(s); |
| } |
| |
| struct UnnamedBitfieldSurrounding { |
| unsigned char : 2; |
| unsigned char a : 4; |
| unsigned char : 2; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnnamedBitfieldSurrounding( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], -4 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 1 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP5:%.*]] = load i8, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = and i8 [[TMP5]], 63 |
| // LINUX-NEXT: store i8 [[TMP6]], ptr [[TMP4]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnnamedBitfieldSurrounding(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 1 |
| // WINDOWS-NEXT: %3 = and i8 %2, -4 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 1 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %5 = load i8, ptr %4, align 1 |
| // WINDOWS-NEXT: %6 = and i8 %5, 63 |
| // WINDOWS-NEXT: store i8 %6, ptr %4, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnnamedBitfieldSurrounding(struct UnnamedBitfieldSurrounding *s) { |
| // byte 0: unnamed[0-1], a[2-5], unnamed[6-7] |
| // bits 0-1 and 6-7 must be cleared |
| // Masks: |
| // 0b11111100 == -4 |
| // 0b00111111 == 63 |
| __builtin_clear_padding(s); |
| } |
| |
| struct UnnamedZeroWidthBitfield { |
| unsigned char a : 4; |
| unsigned int : 0; |
| unsigned int b : 4; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnnamedZeroWidthBitfield( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 4 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], 15 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 4 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: store i8 0, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = getelementptr i8, ptr [[TMP0]], i32 2 |
| // LINUX-NEXT: store i8 0, ptr [[TMP5]], align 2 |
| // LINUX-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[TMP0]], i32 3 |
| // LINUX-NEXT: store i8 0, ptr [[TMP6]], align 1 |
| // LINUX-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP0]], i32 4 |
| // LINUX-NEXT: [[TMP8:%.*]] = load i8, ptr [[TMP7]], align 4 |
| // LINUX-NEXT: [[TMP9:%.*]] = and i8 [[TMP8]], 15 |
| // LINUX-NEXT: store i8 [[TMP9]], ptr [[TMP7]], align 4 |
| // LINUX-NEXT: [[TMP10:%.*]] = getelementptr i8, ptr [[TMP0]], i32 5 |
| // LINUX-NEXT: store i8 0, ptr [[TMP10]], align 1 |
| // LINUX-NEXT: [[TMP11:%.*]] = getelementptr i8, ptr [[TMP0]], i32 6 |
| // LINUX-NEXT: store i8 0, ptr [[TMP11]], align 2 |
| // LINUX-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[TMP0]], i32 7 |
| // LINUX-NEXT: store i8 0, ptr [[TMP12]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnnamedZeroWidthBitfield(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 4 |
| // WINDOWS-NEXT: %3 = and i8 %2, 15 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 4 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: store i8 0, ptr %4, align 1 |
| // WINDOWS-NEXT: %5 = getelementptr i8, ptr %0, i32 2 |
| // WINDOWS-NEXT: store i8 0, ptr %5, align 2 |
| // WINDOWS-NEXT: %6 = getelementptr i8, ptr %0, i32 3 |
| // WINDOWS-NEXT: store i8 0, ptr %6, align 1 |
| // WINDOWS-NEXT: %7 = getelementptr i8, ptr %0, i32 4 |
| // WINDOWS-NEXT: %8 = load i8, ptr %7, align 4 |
| // WINDOWS-NEXT: %9 = and i8 %8, 15 |
| // WINDOWS-NEXT: store i8 %9, ptr %7, align 4 |
| // WINDOWS-NEXT: %10 = getelementptr i8, ptr %0, i32 5 |
| // WINDOWS-NEXT: store i8 0, ptr %10, align 1 |
| // WINDOWS-NEXT: %11 = getelementptr i8, ptr %0, i32 6 |
| // WINDOWS-NEXT: store i8 0, ptr %11, align 2 |
| // WINDOWS-NEXT: %12 = getelementptr i8, ptr %0, i32 7 |
| // WINDOWS-NEXT: store i8 0, ptr %12, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnnamedZeroWidthBitfield(struct UnnamedZeroWidthBitfield *s) { |
| // byte 0: a[0-3], unnamed[4-7] |
| // bytes 1-3: struct padding |
| // bytes 4-7: b[bits 0-3], tail padding[bits 4-31] |
| // |
| // byte 0: clear bits 4-7 |
| // mask: 0b00001111 == 15 |
| // |
| // byte 1-3: clear all bits |
| // 3 x store i8 0 |
| // |
| // byte 4-7: clear bits 4-31 |
| // mask: 0b00001111 == 15 |
| // 3 x store i8 0 |
| __builtin_clear_padding(s); |
| } |
| |
| struct UnnamedBitfieldMultiByte { |
| unsigned short a : 4; |
| unsigned short : 8; |
| unsigned short b : 4; |
| }; |
| |
| // LINUX-LABEL: define dso_local void @testUnnamedBitfieldMultiByte( |
| // LINUX-SAME: ptr noundef [[S:%.*]]) #[[ATTR0]] { |
| // LINUX-NEXT: [[ENTRY:.*:]] |
| // LINUX-NEXT: [[S_ADDR:%.*]] = alloca ptr, align 8 |
| // LINUX-NEXT: store ptr [[S]], ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S_ADDR]], align 8 |
| // LINUX-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i32 0 |
| // LINUX-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP3:%.*]] = and i8 [[TMP2]], 15 |
| // LINUX-NEXT: store i8 [[TMP3]], ptr [[TMP1]], align 2 |
| // LINUX-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP0]], i32 1 |
| // LINUX-NEXT: [[TMP5:%.*]] = load i8, ptr [[TMP4]], align 1 |
| // LINUX-NEXT: [[TMP6:%.*]] = and i8 [[TMP5]], -16 |
| // LINUX-NEXT: store i8 [[TMP6]], ptr [[TMP4]], align 1 |
| // LINUX-NEXT: ret void |
| // |
| // WINDOWS-LABEL: define dso_local void @testUnnamedBitfieldMultiByte(ptr noundef %s) #0 { |
| // WINDOWS-NEXT: entry: |
| // WINDOWS-NEXT: %s.addr = alloca ptr, align 8 |
| // WINDOWS-NEXT: store ptr %s, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %0 = load ptr, ptr %s.addr, align 8 |
| // WINDOWS-NEXT: %1 = getelementptr i8, ptr %0, i32 0 |
| // WINDOWS-NEXT: %2 = load i8, ptr %1, align 2 |
| // WINDOWS-NEXT: %3 = and i8 %2, 15 |
| // WINDOWS-NEXT: store i8 %3, ptr %1, align 2 |
| // WINDOWS-NEXT: %4 = getelementptr i8, ptr %0, i32 1 |
| // WINDOWS-NEXT: %5 = load i8, ptr %4, align 1 |
| // WINDOWS-NEXT: %6 = and i8 %5, -16 |
| // WINDOWS-NEXT: store i8 %6, ptr %4, align 1 |
| // WINDOWS-NEXT: ret void |
| // |
| void testUnnamedBitfieldMultiByte(struct UnnamedBitfieldMultiByte *s) { |
| // 2 bytes: a[0-3], unnamed[4-11], b[12-15] |
| // byte 0: clear bits 4-7 |
| // byte 1: clear bits 0-3 |
| // |
| // Masks: |
| // 0b00001111 == 15 |
| // 0b11110000 == -16 |
| __builtin_clear_padding(s); |
| } |
