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| author | Yaron Keren <yaron.keren@gmail.com> | 2014-04-19 13:47:43 +0000 |
|---|---|---|
| committer | Yaron Keren <yaron.keren@gmail.com> | 2014-04-19 13:47:43 +0000 |
| commit | 64b2297786f7fd6f5fa24cdd4db0298fbf211466 (patch) | |
| tree | c5250834c0fd832fbdb7363822269f603cee844f /test | |
| parent | 2fa9e6ca34a1f696904c0b8006c91d64679c2b51 (diff) | |
| download | llvm-64b2297786f7fd6f5fa24cdd4db0298fbf211466.tar.gz llvm-64b2297786f7fd6f5fa24cdd4db0298fbf211466.tar.bz2 llvm-64b2297786f7fd6f5fa24cdd4db0298fbf211466.tar.xz | |
Patch by Vadim Chugunov
Win64 stack unwinder gets confused when execution flow "falls through" after
a call to 'noreturn' function. This fixes the "missing epilogue" problem by
emitting a trap instruction for IR 'unreachable' on x86_x64-pc-windows.
A secondary use for it would be for anyone wanting to make double-sure that
'noreturn' functions, indeed, do not return.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206684 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/br-fold.ll | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/test/CodeGen/X86/br-fold.ll b/test/CodeGen/X86/br-fold.ll index 5223463011..fd1e73bde8 100644 --- a/test/CodeGen/X86/br-fold.ll +++ b/test/CodeGen/X86/br-fold.ll @@ -1,7 +1,19 @@ -; RUN: llc -march=x86-64 < %s | FileCheck %s +; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck -check-prefix=X64_DARWIN %s +; RUN: llc -mtriple=x86_64-pc-linux < %s | FileCheck -check-prefix=X64_LINUX %s +; RUN: llc -mtriple=x86_64-pc-windows < %s | FileCheck -check-prefix=X64_WINDOWS %s +; RUN: llc -mtriple=x86_64-pc-windows-gnu < %s | FileCheck -check-prefix=X64_WINDOWS_GNU %s -; CHECK: orq -; CHECK-NEXT: %bb8.i329 +; X64_DARWIN: orq +; X64_DARWIN-NEXT: %bb8.i329 + +; X64_LINUX: orq %rax, %rcx +; X64_LINUX-NEXT: %bb8.i329 + +; X64_WINDOWS: orq %rax, %rcx +; X64_WINDOWS-NEXT: ud2 + +; X64_WINDOWS_GNU: orq %rax, %rcx +; X64_WINDOWS_GNU-NEXT: ud2 @_ZN11xercesc_2_513SchemaSymbols21fgURI_SCHEMAFORSCHEMAE = external constant [33 x i16], align 32 ; <[33 x i16]*> [#uses=1] @_ZN11xercesc_2_56XMLUni16fgNotationStringE = external constant [9 x i16], align 16 ; <[9 x i16]*> [#uses=1] |