| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s -check-prefix=SSE |
| ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -mattr=-sse | FileCheck %s -check-prefix=NOSSE |
| ; RUN: llc < %s -mtriple=i386-linux-gnux32 | FileCheck %s -check-prefix=32BITABI |
| ; RUN: llc < %s -mtriple=i686-linux-gnux32 | FileCheck %s -check-prefix=32BITABI |
| ; |
| ; Verifies that x32 va_start lowering is sane. To regenerate this test, use |
| ; cat <<EOF | |
| ; #include <stdarg.h> |
| ; |
| ; int foo(float a, const char* fmt, ...) { |
| ; va_list ap; |
| ; va_start(ap, fmt); |
| ; int value = va_arg(ap, int); |
| ; va_end(ap); |
| ; return value; |
| ; } |
| ; EOF |
| ; build/bin/clang -mx32 -O3 -o- -S -emit-llvm -xc - |
| ; |
| target datalayout = "e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnux32" |
| |
| %struct.__va_list_tag = type { i32, i32, ptr, ptr } |
| |
| define i32 @foo(float %a, ptr nocapture readnone %fmt, ...) nounwind { |
| ; SSE-LABEL: foo: |
| ; SSE: # %bb.0: # %entry |
| ; SSE-NEXT: subl $72, %esp |
| ; SSE-NEXT: movq %rsi, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movq %rdx, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movq %rcx, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movq %r8, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movq %r9, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: testb %al, %al |
| ; SSE-NEXT: je .LBB0_5 |
| ; SSE-NEXT: # %bb.4: # %entry |
| ; SSE-NEXT: movaps %xmm1, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movaps %xmm2, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movaps %xmm3, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movaps %xmm4, (%esp) |
| ; SSE-NEXT: movaps %xmm5, {{[0-9]+}}(%esp) |
| ; SSE-NEXT: movaps %xmm6, {{[0-9]+}}(%esp) |
| ; SSE-NEXT: movaps %xmm7, {{[0-9]+}}(%esp) |
| ; SSE-NEXT: .LBB0_5: # %entry |
| ; SSE-NEXT: leal -{{[0-9]+}}(%rsp), %eax |
| ; SSE-NEXT: movl %eax, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: leal {{[0-9]+}}(%rsp), %eax |
| ; SSE-NEXT: movl %eax, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movabsq $274877906952, %rax # imm = 0x4000000008 |
| ; SSE-NEXT: movq %rax, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: movl $8, %ecx |
| ; SSE-NEXT: cmpl $40, %ecx |
| ; SSE-NEXT: ja .LBB0_2 |
| ; SSE-NEXT: # %bb.1: # %vaarg.in_reg |
| ; SSE-NEXT: movl -{{[0-9]+}}(%esp), %eax |
| ; SSE-NEXT: addl %ecx, %eax |
| ; SSE-NEXT: addl $8, %ecx |
| ; SSE-NEXT: movl %ecx, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: jmp .LBB0_3 |
| ; SSE-NEXT: .LBB0_2: # %vaarg.in_mem |
| ; SSE-NEXT: movl -{{[0-9]+}}(%esp), %eax |
| ; SSE-NEXT: leal 8(%rax), %ecx |
| ; SSE-NEXT: movl %ecx, -{{[0-9]+}}(%esp) |
| ; SSE-NEXT: .LBB0_3: # %vaarg.end |
| ; SSE-NEXT: movl (%eax), %eax |
| ; SSE-NEXT: addl $72, %esp |
| ; SSE-NEXT: retq |
| ; |
| ; NOSSE-LABEL: foo: |
| ; NOSSE: # %bb.0: # %entry |
| ; NOSSE-NEXT: movq %rsi, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movq %rdx, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movq %rcx, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movq %r8, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movq %r9, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: leal -{{[0-9]+}}(%rsp), %eax |
| ; NOSSE-NEXT: movl %eax, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: leal {{[0-9]+}}(%rsp), %eax |
| ; NOSSE-NEXT: movl %eax, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movabsq $206158430216, %rax # imm = 0x3000000008 |
| ; NOSSE-NEXT: movq %rax, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movl $8, %ecx |
| ; NOSSE-NEXT: cmpl $40, %ecx |
| ; NOSSE-NEXT: ja .LBB0_2 |
| ; NOSSE-NEXT: # %bb.1: # %vaarg.in_reg |
| ; NOSSE-NEXT: movl -{{[0-9]+}}(%esp), %eax |
| ; NOSSE-NEXT: addl %ecx, %eax |
| ; NOSSE-NEXT: addl $8, %ecx |
| ; NOSSE-NEXT: movl %ecx, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movl (%eax), %eax |
| ; NOSSE-NEXT: retq |
| ; NOSSE-NEXT: .LBB0_2: # %vaarg.in_mem |
| ; NOSSE-NEXT: movl -{{[0-9]+}}(%esp), %eax |
| ; NOSSE-NEXT: leal 8(%rax), %ecx |
| ; NOSSE-NEXT: movl %ecx, -{{[0-9]+}}(%esp) |
| ; NOSSE-NEXT: movl (%eax), %eax |
| ; NOSSE-NEXT: retq |
| ; |
| ; 32BITABI-LABEL: foo: |
| ; 32BITABI: # %bb.0: # %entry |
| ; 32BITABI-NEXT: subl $28, %esp |
| ; 32BITABI-NEXT: leal {{[0-9]+}}(%esp), %ecx |
| ; 32BITABI-NEXT: movl %ecx, (%esp) |
| ; 32BITABI-NEXT: cmpl $40, %ecx |
| ; 32BITABI-NEXT: ja .LBB0_2 |
| ; 32BITABI-NEXT: # %bb.1: # %vaarg.in_reg |
| ; 32BITABI-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; 32BITABI-NEXT: addl %ecx, %eax |
| ; 32BITABI-NEXT: addl $8, %ecx |
| ; 32BITABI-NEXT: movl %ecx, (%esp) |
| ; 32BITABI-NEXT: jmp .LBB0_3 |
| ; 32BITABI-NEXT: .LBB0_2: # %vaarg.in_mem |
| ; 32BITABI-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; 32BITABI-NEXT: leal 8(%eax), %ecx |
| ; 32BITABI-NEXT: movl %ecx, {{[0-9]+}}(%esp) |
| ; 32BITABI-NEXT: .LBB0_3: # %vaarg.end |
| ; 32BITABI-NEXT: movl (%eax), %eax |
| ; 32BITABI-NEXT: addl $28, %esp |
| ; 32BITABI-NEXT: retl |
| entry: |
| %ap = alloca [1 x %struct.__va_list_tag], align 16 |
| call void @llvm.lifetime.start.p0(i64 16, ptr %ap) #2 |
| call void @llvm.va_start(ptr %ap) |
| %gp_offset = load i32, ptr %ap, align 16 |
| %fits_in_gp = icmp ult i32 %gp_offset, 41 |
| br i1 %fits_in_gp, label %vaarg.in_reg, label %vaarg.in_mem |
| |
| vaarg.in_reg: ; preds = %entry |
| %0 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %ap, i32 0, i32 0, i32 3 |
| %reg_save_area = load ptr, ptr %0, align 4 |
| %1 = getelementptr i8, ptr %reg_save_area, i32 %gp_offset |
| %2 = add i32 %gp_offset, 8 |
| store i32 %2, ptr %ap, align 16 |
| br label %vaarg.end |
| vaarg.in_mem: ; preds = %entry |
| %overflow_arg_area_p = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %ap, i32 0, i32 0, i32 2 |
| %overflow_arg_area = load ptr, ptr %overflow_arg_area_p, align 8 |
| %overflow_arg_area.next = getelementptr i8, ptr %overflow_arg_area, i32 8 |
| store ptr %overflow_arg_area.next, ptr %overflow_arg_area_p, align 8 |
| br label %vaarg.end |
| |
| vaarg.end: ; preds = %vaarg.in_mem, %vaarg.in_reg |
| %vaarg.addr.in = phi ptr [ %1, %vaarg.in_reg ], [ %overflow_arg_area, %vaarg.in_mem ] |
| %3 = load i32, ptr %vaarg.addr.in, align 4 |
| call void @llvm.va_end(ptr %ap) |
| call void @llvm.lifetime.end.p0(i64 16, ptr %ap) #2 |
| ret i32 %3 |
| } |
| |
| ; Function Attrs: nounwind argmemonly |
| declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.va_start(ptr) nounwind |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.va_end(ptr) nounwind |
| |
| ; Function Attrs: nounwind argmemonly |
| declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind |
| |