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| author | Akira Hatanaka <ahatanaka@apple.com> | 2014-10-23 04:17:05 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@apple.com> | 2014-10-23 04:17:05 +0000 |
| commit | 2ee0e9e6ee1dd2d86a2f4d4ea6bbfa5577ffe982 (patch) | |
| tree | 4760a123a55e67b1631932b84d0c3139623707ef /llvm/test/CodeGen/ARM/stack_guard_remat.ll | |
| parent | 319be7222003a55cbb373ebcc0601bb84c869f82 (diff) | |
| download | bcm5719-llvm-2ee0e9e6ee1dd2d86a2f4d4ea6bbfa5577ffe982.tar.gz bcm5719-llvm-2ee0e9e6ee1dd2d86a2f4d4ea6bbfa5577ffe982.zip | |
[ARM, stack protector] If supported, use armv7 instructions.
This commit enables using movt/movw to load the stack guard address:
movw r0, :lower16:(L_g3$non_lazy_ptr-(LPC0_0+8))
movt r0, :upper16:(L_g3$non_lazy_ptr-(LPC0_0+8))
ldr r0, [pc, r0]
Previously a pc-relative load was emitted:
ldr r0, LCPI0_0
ldr r0, [pc, r0]
rdar://problem/18740489
llvm-svn: 220470
Diffstat (limited to 'llvm/test/CodeGen/ARM/stack_guard_remat.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/stack_guard_remat.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/stack_guard_remat.ll b/llvm/test/CodeGen/ARM/stack_guard_remat.ll index 7dc18250d38..b11ea92b04d 100644 --- a/llvm/test/CodeGen/ARM/stack_guard_remat.ll +++ b/llvm/test/CodeGen/ARM/stack_guard_remat.ll @@ -1,6 +1,9 @@ ; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC ; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=STATIC ; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=DYNAMIC-NO-PIC +; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC-V7 +; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=STATIC-V7 +; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s -check-prefix=DYNAMIC-NO-PIC-V7 ;PIC: foo2 ;PIC: ldr [[R0:r[0-9]+]], [[LABEL0:LCPI[0-9_]+]] @@ -23,6 +26,27 @@ ;DYNAMIC-NO-PIC: [[LABEL0]]: ;DYNAMIC-NO-PIC-NEXT: .long L___stack_chk_guard$non_lazy_ptr +;PIC-V7: movw [[R0:r[0-9]+]], :lower16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0:LPC[0-9_]+]]+8)) +;PIC-V7: movt [[R0]], :upper16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0]]+8)) +;PIC-V7: [[LABEL0]]: +;PIC-V7: ldr [[R0]], {{\[}}pc, [[R0]]{{\]}} +;PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}} + +;PIC-V7: L___stack_chk_guard$non_lazy_ptr: +;PIC-V7: .indirect_symbol ___stack_chk_guard + +;STATIC-V7: movw [[R0:r[0-9]+]], :lower16:___stack_chk_guard +;STATIC-V7: movt [[R0]], :upper16:___stack_chk_guard +;STATIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}} + +;DYNAMIC-NO-PIC-V7: movw [[R0:r[0-9]+]], :lower16:L___stack_chk_guard$non_lazy_ptr +;DYNAMIC-NO-PIC-V7: movt [[R0]], :upper16:L___stack_chk_guard$non_lazy_ptr +;DYNAMIC-NO-PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}} +;DYNAMIC-NO-PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}} + +;DYNAMIC-NO-PIC-V7: L___stack_chk_guard$non_lazy_ptr: +;DYNAMIC-NO-PIC-V7: .indirect_symbol ___stack_chk_guard + ; Function Attrs: nounwind ssp define i32 @test_stack_guard_remat() #0 { %a1 = alloca [256 x i32], align 4 |
