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| author | Bill Wendling <isanbard@gmail.com> | 2013-09-09 02:37:14 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2013-09-09 02:37:14 +0000 |
| commit | c3cee57f7d20f69a84fd88464ed8cf050e63c7ad (patch) | |
| tree | 709d211b7927dba1ef3414207993d651646b1aaf /test/CodeGen/X86 | |
| parent | 959cd8f49bb85c8dfe971eb5a8a648ff41ca8ebd (diff) | |
| download | llvm-c3cee57f7d20f69a84fd88464ed8cf050e63c7ad.tar.gz llvm-c3cee57f7d20f69a84fd88464ed8cf050e63c7ad.tar.bz2 llvm-c3cee57f7d20f69a84fd88464ed8cf050e63c7ad.tar.xz | |
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>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190290 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
| -rw-r--r-- | test/CodeGen/X86/compact-unwind.ll | 13 | ||||
| -rw-r--r-- | test/CodeGen/X86/no-compact-unwind.ll | 13 |
2 files changed, 15 insertions, 11 deletions
diff --git a/test/CodeGen/X86/compact-unwind.ll b/test/CodeGen/X86/compact-unwind.ll index 8c4fa27da5..6ee9566f9a 100644 --- a/test/CodeGen/X86/compact-unwind.ll +++ b/test/CodeGen/X86/compact-unwind.ll @@ -1,18 +1,21 @@ -; RUN: llc < %s -disable-cfi -disable-fp-elim -mtriple x86_64-apple-darwin11 | FileCheck %s +; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 | FileCheck -check-prefix=ASM %s +; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -filetype=obj -o - \ +; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -s - \ +; RUN: | FileCheck -check-prefix=CU %s %ty = type { i8* } @gv = external global i32 ; This is aligning the stack with a push of a random register. -; CHECK: pushq %rax +; ASM: pushq %rax ; 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. ; -; CHECK: __LD,__compact_unwind -; CHECK: _foo ## Range Start -; CHECK: 16842753 ## Compact Unwind Encoding: 0x1010001 +; CU: Contents of section __compact_unwind: +; CU-NEXT: 0020 00000000 00000000 1e000000 01000101 +; CU-NEXT: 0030 00000000 00000000 00000000 00000000 define i8* @foo(i64 %size) { %addr = alloca i64, align 8 diff --git a/test/CodeGen/X86/no-compact-unwind.ll b/test/CodeGen/X86/no-compact-unwind.ll index 627f7da9f7..2f34b6f799 100644 --- a/test/CodeGen/X86/no-compact-unwind.ll +++ b/test/CodeGen/X86/no-compact-unwind.ll @@ -1,4 +1,6 @@ -; RUN: llc < %s -mtriple x86_64-apple-macosx10.8.0 -disable-cfi | FileCheck %s +; RUN: llc < %s -mtriple x86_64-apple-macosx10.8.0 -filetype=obj -o - \ +; RUN: | llvm-objdump -triple x86_64-apple-macosx10.8.0 -s - \ +; RUN: | FileCheck %s %"struct.dyld::MappedRanges" = type { [400 x %struct.anon], %"struct.dyld::MappedRanges"* } %struct.anon = type { %class.ImageLoader*, i64, i64 } @@ -13,12 +15,11 @@ declare void @OSMemoryBarrier() optsize ; compact unwind encodings for this function. This then defaults to using the ; DWARF EH frame. ; -; CHECK: .section __LD,__compact_unwind,regular,debug -; CHECK: .quad _func -; CHECK: .long 67108864 ## Compact Unwind Encoding: 0x4000000 -; CHECK: .quad 0 ## Personality Function -; CHECK: .quad 0 ## LSDA +; CHECK: Contents of section __compact_unwind: +; CHECK-NEXT: 0048 00000000 00000000 42000000 00000004 +; CHECK-NEXT: 0058 00000000 00000000 00000000 00000000 ; + define void @func(%class.ImageLoader* %image) optsize ssp uwtable { entry: br label %for.cond1.preheader |