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llvm-mirror/test/CodeGen/X86/compact-unwind.ll

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Try to fix the atom buildbots by adding an explicit 'cpu' to the 'llc' command. llvm-svn: 190541
2013-09-11 21:06:04 +02:00
; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 | FileCheck -check-prefix=ASM %s
; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 -filetype=obj -o - \
Generate compact unwind encoding from CFI directives. We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> llvm-svn: 190290
2013-09-09 04:37:14 +02:00
; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -s - \
; RUN: | FileCheck -check-prefix=CU %s
Try to fix the atom buildbots by adding an explicit 'cpu' to the 'llc' command. llvm-svn: 190541
2013-09-11 21:06:04 +02:00
; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 \
Another attempt to fix windows buildbots. llvm-svn: 190350
2013-09-09 22:29:32 +02:00
; RUN: | llvm-mc -triple x86_64-apple-darwin11 -filetype=obj -o - \
Expand test to make sure that we can generate compact unwind from an ASM file. llvm-svn: 190347
2013-09-09 22:10:54 +02:00
; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -s - \
; RUN: | FileCheck -check-prefix=FROM-ASM %s
Generate a compact unwind encoding in the face of a stack alignment push. We generate a `push' of a random register (%rax) if the stack needs to be aligned by the size of that register. However, this could mess up compact unwind generation. In particular, we want to still generate compact unwind in the presence of this monstrosity. Check if the push of of the %rax/%eax register. If it is and it's marked with the `FrameSetup' flag, then we can generate a compact unwind encoding for the function only if the push is the last FrameSetup instruction. llvm-svn: 181540
2013-05-09 22:10:38 +02:00
%ty = type { i8* }
@gv = external global i32
; This is aligning the stack with a push of a random register.
Generate compact unwind encoding from CFI directives. We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> llvm-svn: 190290
2013-09-09 04:37:14 +02:00
; ASM: pushq %rax
Generate a compact unwind encoding in the face of a stack alignment push. We generate a `push' of a random register (%rax) if the stack needs to be aligned by the size of that register. However, this could mess up compact unwind generation. In particular, we want to still generate compact unwind in the presence of this monstrosity. Check if the push of of the %rax/%eax register. If it is and it's marked with the `FrameSetup' flag, then we can generate a compact unwind encoding for the function only if the push is the last FrameSetup instruction. llvm-svn: 181540
2013-05-09 22:10:38 +02:00
; Even though we can't encode %rax into the compact unwind, We still want to be
; able to generate a compact unwind encoding in this particular case.
Expand test to make sure that we can generate compact unwind from an ASM file. llvm-svn: 190347
2013-09-09 22:10:54 +02:00
Generate compact unwind encoding from CFI directives. We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> llvm-svn: 190290
2013-09-09 04:37:14 +02:00
; CU: Contents of section __compact_unwind:
; CU-NEXT: 0020 00000000 00000000 1e000000 01000101
; CU-NEXT: 0030 00000000 00000000 00000000 00000000
Generate a compact unwind encoding in the face of a stack alignment push. We generate a `push' of a random register (%rax) if the stack needs to be aligned by the size of that register. However, this could mess up compact unwind generation. In particular, we want to still generate compact unwind in the presence of this monstrosity. Check if the push of of the %rax/%eax register. If it is and it's marked with the `FrameSetup' flag, then we can generate a compact unwind encoding for the function only if the push is the last FrameSetup instruction. llvm-svn: 181540
2013-05-09 22:10:38 +02:00
Expand test to make sure that we can generate compact unwind from an ASM file. llvm-svn: 190347
2013-09-09 22:10:54 +02:00
; FROM-ASM: Contents of section __compact_unwind:
; FROM-ASM-NEXT: 0020 00000000 00000000 1e000000 01000101
; FROM-ASM-NEXT: 0030 00000000 00000000 00000000 00000000
Generate a compact unwind encoding in the face of a stack alignment push. We generate a `push' of a random register (%rax) if the stack needs to be aligned by the size of that register. However, this could mess up compact unwind generation. In particular, we want to still generate compact unwind in the presence of this monstrosity. Check if the push of of the %rax/%eax register. If it is and it's marked with the `FrameSetup' flag, then we can generate a compact unwind encoding for the function only if the push is the last FrameSetup instruction. llvm-svn: 181540
2013-05-09 22:10:38 +02:00
define i8* @foo(i64 %size) {
%addr = alloca i64, align 8
%tmp20 = load i32* @gv, align 4
%tmp21 = call i32 @bar()
%tmp25 = load i64* %addr, align 8
%tmp26 = inttoptr i64 %tmp25 to %ty*
%tmp29 = getelementptr inbounds %ty* %tmp26, i64 0, i32 0
%tmp34 = load i8** %tmp29, align 8
%tmp35 = getelementptr inbounds i8* %tmp34, i64 %size
store i8* %tmp35, i8** %tmp29, align 8
ret i8* null
}
declare i32 @bar()
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