| ;; This target uses 32-bit sized and aligned pointers. |
| ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility --data-layout="e-p:32:32-i64:64:64" %s | FileCheck %s |
| |
| ;; The tests should be the exact same even with different preferred alignments since |
| ;; the ABI alignment is used. |
| ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility --data-layout="e-p:32:32-i64:64:128" %s | FileCheck %s |
| |
| ;; Constant propagation should be agnostic towards sections. |
| ;; Also the new global should be in the original vtable's section. |
| ; CHECK: [[VT1DATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\03\00", |
| ; CHECK-SAME: }, section "vt1sec", !type [[T8:![0-9]+]] |
| @vt1 = constant [3 x ptr] [ |
| ptr @vf0i1, |
| ptr @vf1i8, |
| ptr @vf1i32 |
| ], section "vt1sec", !type !0 |
| |
| ;; This represents a normal vtable using the default ABI alignments. |
| ;; For this test, the pointers are 32-bit aligned. The important things |
| ;; to note are: |
| ;; |
| ;; 1. All the constants from the 3rd field propgating an i32 placed at an |
| ;; offset of -6 from the vtable. Since this vtable is 32-bit aligned |
| ;; according to the datalayout, this could result in an unaligned load. |
| ;; 2. The call instruction in @call3 is replaced with a GEP + load. |
| ;; |
| ; CHECK: [[VT2DATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\02\01", |
| ; CHECK-SAME: !type [[T8]] |
| @vt2 = constant [3 x ptr] [ |
| ptr @vf1i1, |
| ptr @vf0i8, |
| ptr @vf2i32 |
| ], !type !0 |
| |
| ;; This represents an underaligned vtable. |
| ;; |
| ;; All the functions returning i8s and i1s should still be constant-propagated |
| ;; because we can still do an aligned load regardless of where the 1-byte aligned |
| ;; vtable is. |
| ; CHECK: [[VT3DATA:@[^ ]*]] = {{.*}} { [2 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [2 x i8] c"\03\00", |
| ; CHECK-SAME: }, align 1, !type [[T5:![0-9]+]] |
| @vt3 = constant [3 x ptr] [ |
| ptr @vf0i1, |
| ptr @vf1i8, |
| ptr @vf3i32 |
| ], align 1, !type !0 |
| |
| ;; This represents an overaligned vtable. |
| ; CHECK: [[VT4DATA:@[^ ]*]] = {{.*}} { [16 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [16 x i8] c"\00\00\00\00\00\00\00\00\00\00\00\00\00\00\02\01", |
| ; CHECK-SAME: }, align 16, !type [[T16:![0-9]+]] |
| @vt4 = constant [3 x ptr] [ |
| ptr @vf1i1, |
| ptr @vf0i8, |
| ptr @vf4i32 |
| ], align 16, !type !0 |
| |
| ;; These contain a mix of different integral type sizes. |
| ; CHECK: [[VT6DATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\00\0B", |
| ; CHECK-SAME: }, !type [[T1:![0-9]+]] |
| @vt6 = constant [3 x ptr] [ |
| ptr @vf0i1, |
| ptr @vf10i8, |
| ptr @vf5i64 |
| ], !type !1 |
| |
| ; CHECK: [[VT7DATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x ptr], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\00\0A", |
| ; CHECK-SAME: }, !type [[T1]] |
| @vt7 = constant [3 x ptr] [ |
| ptr @vf1i1, |
| ptr @vf9i8, |
| ptr @vf6i64 |
| ], !type !1 |
| |
| ;; Test relative vtables |
| ; CHECK: [[VT6RELDATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x i32], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\00\0B", |
| ; CHECK-SAME: ], [0 x i8] zeroinitializer }, !type [[TREL:![0-9]+]] |
| @vt6_rel = constant [3 x i32] [ |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf0i1 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32), |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf10i8 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32), |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf5i64 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32) |
| ], !type !2 |
| |
| ; CHECK: [[VT7RELDATA:@[^ ]*]] = {{.*}} { [4 x i8], [3 x i32], [0 x i8] } |
| ; CHECK-SAME: [4 x i8] c"\00\00\00\0A", |
| ; CHECK-SAME: ], [0 x i8] zeroinitializer }, !type [[TREL]] |
| @vt7_rel = constant [3 x i32] [ |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf1i1 to i64), i64 ptrtoint (ptr @vt7_rel to i64)) to i32), |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf9i8 to i64), i64 ptrtoint (ptr @vt7_rel to i64)) to i32), |
| i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf6i64 to i64), i64 ptrtoint (ptr @vt7_rel to i64)) to i32) |
| ], !type !2 |
| |
| ; CHECK: @vt1 = alias [3 x ptr], getelementptr inbounds ({ [4 x i8], [3 x ptr], [0 x i8] }, ptr [[VT1DATA]], i32 0, i32 1) |
| ; CHECK: @vt2 = alias [3 x ptr], getelementptr inbounds ({ [4 x i8], [3 x ptr], [0 x i8] }, ptr [[VT2DATA]], i32 0, i32 1) |
| ; CHECK: @vt3 = alias [3 x ptr], getelementptr inbounds ({ [2 x i8], [3 x ptr], [0 x i8] }, ptr [[VT3DATA]], i32 0, i32 1) |
| ; CHECK: @vt4 = alias [3 x ptr], getelementptr inbounds ({ [16 x i8], [3 x ptr], [0 x i8] }, ptr [[VT4DATA]], i32 0, i32 1) |
| ; CHECK: @vt6 = alias [3 x ptr], getelementptr inbounds ({ [4 x i8], [3 x ptr], [0 x i8] }, ptr [[VT6DATA]], i32 0, i32 1) |
| ; CHECK: @vt7 = alias [3 x ptr], getelementptr inbounds ({ [4 x i8], [3 x ptr], [0 x i8] }, ptr [[VT7DATA]], i32 0, i32 1) |
| ; CHECK: @vt6_rel = alias [3 x i32], getelementptr inbounds ({ [4 x i8], [3 x i32], [0 x i8] }, ptr [[VT6RELDATA]], i32 0, i32 1) |
| ; CHECK: @vt7_rel = alias [3 x i32], getelementptr inbounds ({ [4 x i8], [3 x i32], [0 x i8] }, ptr [[VT7RELDATA]], i32 0, i32 1) |
| |
| define i1 @vf0i1(ptr %this) readnone { |
| ret i1 0 |
| } |
| |
| define i1 @vf1i1(ptr %this) readnone { |
| ret i1 1 |
| } |
| |
| define i8 @vf0i8(ptr %this) readnone { |
| ret i8 2 |
| } |
| |
| define i8 @vf1i8(ptr %this) readnone { |
| ret i8 3 |
| } |
| |
| define i32 @vf1i32(ptr %this) readnone { |
| ret i32 1 |
| } |
| |
| define i32 @vf2i32(ptr %this) readnone { |
| ret i32 2 |
| } |
| |
| define i32 @vf3i32(ptr %this) readnone { |
| ret i32 3 |
| } |
| |
| define i32 @vf4i32(ptr %this) readnone { |
| ret i32 4 |
| } |
| |
| define i64 @vf5i64(ptr %this) readnone { |
| ret i64 5 |
| } |
| |
| define i64 @vf6i64(ptr %this) readnone { |
| ret i64 6 |
| } |
| |
| define i16 @vf7i16(ptr %this) readnone { |
| ret i16 7 |
| } |
| |
| define i16 @vf8i16(ptr %this) readnone { |
| ret i16 8 |
| } |
| |
| define i8 @vf9i8(ptr %this) readnone { |
| ret i8 10 |
| } |
| |
| define i8 @vf10i8(ptr %this) readnone { |
| ret i8 11 |
| } |
| |
| ; CHECK-LABEL: define i1 @call1( |
| define i1 @call1(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid") |
| call void @llvm.assume(i1 %p) |
| %fptr = load ptr, ptr %vtable |
| ; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -1 |
| ; CHECK: [[VTLOAD1:%[^ ]*]] = load i8, ptr [[VTGEP1]] |
| ; CHECK: [[VTAND1:%[^ ]*]] = and i8 [[VTLOAD1]], 1 |
| ; CHECK: [[VTCMP1:%[^ ]*]] = icmp ne i8 [[VTAND1]], 0 |
| %result = call i1 %fptr(ptr %obj) |
| ; CHECK: ret i1 [[VTCMP1]] |
| ret i1 %result |
| } |
| |
| ; CHECK-LABEL: define i8 @call2( |
| define i8 @call2(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 1 |
| %fptr = load ptr, ptr %fptrptr |
| %result = call i8 %fptr(ptr %obj) |
| ret i8 %result |
| ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -2 |
| ; CHECK: [[VTLOAD:%[^ ]*]] = load i8, ptr [[VTGEP2]] |
| ; CHECK: ret i8 [[VTLOAD]] |
| } |
| |
| ;; We never constant propagate this since the i32 cannot be reliably loaded |
| ;; without misalignment from all "typeid" vtables (due to the `align 1` vtable). |
| ; CHECK-LABEL: define i32 @call3( |
| define i32 @call3(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 2 |
| %fptr = load ptr, ptr %fptrptr |
| %result = call i32 %fptr(ptr %obj) |
| ret i32 %result |
| ; CHECK: [[FPTRPTR:%.*]] = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 2 |
| ; CHECK: [[FPTR:%.*]] = load ptr, ptr [[FPTRPTR]], align 4 |
| ; CHECK: [[RES:%.*]] = call i32 [[FPTR]](ptr %obj) |
| ; CHECK: ret i32 [[RES]] |
| } |
| |
| ; CHECK-LABEL: define i1 @call4( |
| define i1 @call4(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 0 |
| %fptr = load ptr, ptr %fptrptr |
| %result = call i1 %fptr(ptr %obj) |
| ret i1 %result |
| ; CHECK: [[RES:%[^ ]*]] = icmp eq ptr %vtable, @vt7 |
| ; CHECK: ret i1 [[RES]] |
| } |
| |
| ; CHECK-LABEL: define i64 @call5( |
| define i64 @call5(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 2 |
| %fptr = load ptr, ptr %fptrptr |
| %result = call i64 %fptr(ptr %obj) |
| ret i64 %result |
| ; CHECK: [[FPTRPTR:%.*]] = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 2 |
| ; CHECK: [[FPTR:%.*]] = load ptr, ptr [[FPTRPTR]], align 4 |
| ; CHECK: [[RES:%.*]] = call i64 [[FPTR]](ptr %obj) |
| ; CHECK: ret i64 [[RES]] |
| } |
| |
| ; CHECK-LABEL: define i8 @call6( |
| define i8 @call6(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 1 |
| %fptr = load ptr, ptr %fptrptr |
| %result = call i8 %fptr(ptr %obj) |
| ret i8 %result |
| ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -1 |
| ; CHECK: [[VTLOAD:%[^ ]*]] = load i8, ptr [[VTGEP2]] |
| ; CHECK: ret i8 [[VTLOAD]] |
| } |
| |
| ; CHECK-LABEL: define i1 @call4_rel( |
| define i1 @call4_rel(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid3") |
| call void @llvm.assume(i1 %p) |
| %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 0) |
| %result = call i1 %fptr(ptr %obj) |
| ret i1 %result |
| ; CHECK: [[RES:%[^ ]*]] = icmp eq ptr %vtable, @vt7_rel |
| ; CHECK: ret i1 [[RES]] |
| } |
| |
| ; CHECK-LABEL: define i64 @call5_rel( |
| define i64 @call5_rel(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid3") |
| call void @llvm.assume(i1 %p) |
| %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 8) |
| %result = call i64 %fptr(ptr %obj) |
| ret i64 %result |
| ; CHECK: [[FPTR:%.*]] = call ptr @llvm.load.relative.i32(ptr %vtable, i32 8) |
| ; CHECK: [[RES:%.*]] = call i64 [[FPTR]](ptr %obj) |
| ; CHECK: ret i64 [[RES]] |
| } |
| |
| ; CHECK-LABEL: define i8 @call6_rel( |
| define i8 @call6_rel(ptr %obj) { |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid3") |
| call void @llvm.assume(i1 %p) |
| %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 4) |
| %result = call i8 %fptr(ptr %obj) |
| ret i8 %result |
| ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -1 |
| ; CHECK: [[VTLOAD:%[^ ]*]] = load i8, ptr [[VTGEP2]] |
| ; CHECK: ret i8 [[VTLOAD]] |
| } |
| |
| declare i1 @llvm.type.test(ptr, metadata) |
| declare void @llvm.assume(i1) |
| declare void @__cxa_pure_virtual() |
| declare ptr @llvm.load.relative.i32(ptr, i32) |
| |
| ; CHECK: [[T8]] = !{i32 4, !"typeid"} |
| ; CHECK: [[T5]] = !{i32 2, !"typeid"} |
| ; CHECK: [[T16]] = !{i32 16, !"typeid"} |
| ; CHECK: [[T1]] = !{i32 4, !"typeid2"} |
| ; CHECK: [[TREL]] = !{i32 4, !"typeid3"} |
| |
| !0 = !{i32 0, !"typeid"} |
| !1 = !{i32 0, !"typeid2"} |
| !2 = !{i32 0, !"typeid3"} |
