[llvm] r213970 - [stack protector] Add test cases for thumb and thumb2.

[Saleem Abdulrasool]

On Jul 25, 2014, at 12:47 PM, Akira Hatanaka <ahatanaka at apple.com> wrote:

> Author: ahatanak
> Date: Fri Jul 25 14:47:46 2014
> New Revision: 213970
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=213970&view=rev
> Log:
> [stack protector] Add test cases for thumb and thumb2.
> 
> <rdar://problem/12475629>

This doesn’t add much to the commit; I can’t tell what the problem actually was.  Can you please include a description of the problem in the future?  I assume that this is a follow up for r213967?

> Added:
>    llvm/trunk/test/CodeGen/Thumb/stack_guard_remat.ll
>    llvm/trunk/test/CodeGen/Thumb2/stack_guard_remat.ll
> 
> Added: llvm/trunk/test/CodeGen/Thumb/stack_guard_remat.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Thumb/stack_guard_remat.ll?rev=213970&view=auto
> ==============================================================================
> --- llvm/trunk/test/CodeGen/Thumb/stack_guard_remat.ll (added)
> +++ llvm/trunk/test/CodeGen/Thumb/stack_guard_remat.ll Fri Jul 25 14:47:46 2014
> @@ -0,0 +1,41 @@
> +; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC
> +; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=STATIC
> +
> +;PIC:   foo2
> +;PIC:   ldr [[R0:r[0-9]+]], [[LABEL0:LCPI[0-9_]+]]
> +;PIC: [[LABEL1:LPC[0-9_]+]]:
> +;PIC:   add [[R0]], pc
> +;PIC:   ldr [[R1:r[0-9]+]], {{\[}}[[R0]]{{\]}}
> +;PIC:   ldr [[R1:r[0-9]+]], {{\[}}[[R1]]{{\]}}
> +
> +;PIC:      [[LABEL0]]:
> +;PIC-NEXT:   .long L___stack_chk_guard$non_lazy_ptr-([[LABEL1]]+4)
> +
> +;STATIC:   foo2
> +;STATIC:   ldr [[R0:r[0-9]+]], [[LABEL0:LCPI[0-9_]+]]
> +;STATIC:   ldr {{r[0-9]+}}, {{\[}}[[R0]]{{\]}}
> +
> +;STATIC:      [[LABEL0]]:
> +;STATIC-NEXT:   .long ___stack_chk_guard
> +
> +; Function Attrs: nounwind ssp
> +define i32 @test_stack_guard_remat() #0 {
> +  %a1 = alloca [256 x i32], align 4
> +  %1 = bitcast [256 x i32]* %a1 to i8*
> +  call void @llvm.lifetime.start(i64 1024, i8* %1)
> +  %2 = getelementptr inbounds [256 x i32]* %a1, i32 0, i32 0
> +  call void @foo3(i32* %2) #3
> +  call void asm sideeffect "foo2", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{sp},~{lr}"()
> +  call void @llvm.lifetime.end(i64 1024, i8* %1)
> +  ret i32 0
> +}
> +
> +; Function Attrs: nounwind
> +declare void @llvm.lifetime.start(i64, i8* nocapture)
> +
> +declare void @foo3(i32*)
> +
> +; Function Attrs: nounwind
> +declare void @llvm.lifetime.end(i64, i8* nocapture)
> +
> +attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
> 
> Added: llvm/trunk/test/CodeGen/Thumb2/stack_guard_remat.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Thumb2/stack_guard_remat.ll?rev=213970&view=auto
> ==============================================================================
> --- llvm/trunk/test/CodeGen/Thumb2/stack_guard_remat.ll (added)
> +++ llvm/trunk/test/CodeGen/Thumb2/stack_guard_remat.ll Fri Jul 25 14:47:46 2014
> @@ -0,0 +1,37 @@
> +; RUN: llc < %s -mtriple=thumbv7-apple-ios -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC
> +; RUN: llc < %s -mtriple=thumbv7-apple-ios -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=STATIC
> +
> +;PIC:   foo2
> +;PIC:   movw  [[R0:r[0-9]+]], :lower16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0:LPC[0-9_]+]]+4))
> +;PIC:   movt  [[R0]], :upper16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0]]+4))
> +;PIC: [[LABEL0]]:
> +;PIC:   add [[R0]], pc
> +;PIC:   ldr [[R1:r[0-9]+]], {{\[}}[[R0]]{{\]}}
> +;PIC:   ldr {{r[0-9]+}}, {{\[}}[[R1]]{{\]}}
> +
> +;STATIC:   foo2
> +;STATIC:   movw  [[R0:r[0-9]+]], :lower16:___stack_chk_guard
> +;STATIC:   movt  [[R0]], :upper16:___stack_chk_guard
> +;STATIC:   ldr {{r[0-9]+}}, {{\[}}[[R0]]{{\]}}
> +
> +; Function Attrs: nounwind ssp
> +define i32 @test_stack_guard_remat() #0 {
> +  %a1 = alloca [256 x i32], align 4
> +  %1 = bitcast [256 x i32]* %a1 to i8*
> +  call void @llvm.lifetime.start(i64 1024, i8* %1)
> +  %2 = getelementptr inbounds [256 x i32]* %a1, i32 0, i32 0
> +  call void @foo3(i32* %2) #3
> +  call void asm sideeffect "foo2", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{sp},~{lr}"()
> +  call void @llvm.lifetime.end(i64 1024, i8* %1)
> +  ret i32 0
> +}
> +
> +; Function Attrs: nounwind
> +declare void @llvm.lifetime.start(i64, i8* nocapture)
> +
> +declare void @foo3(i32*)
> +
> +; Function Attrs: nounwind
> +declare void @llvm.lifetime.end(i64, i8* nocapture)
> +
> +attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
> 
> 
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-- 
Saleem Abdulrasool
abdulras (at) fb (dot) com