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llvm-project/llvm/test/CodeGen/X86/br-fold.ll

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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. llvm-svn: 206684
2014-04-19 21:47:43 +08:00
; 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
Fix a codegen abort seen in 483.xalancbmk. llvm-svn: 93417
2010-01-14 11:08:49 +08:00
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. llvm-svn: 206684
2014-04-19 21:47:43 +08:00
; 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
Fix a codegen abort seen in 483.xalancbmk. llvm-svn: 93417
2010-01-14 11:08:49 +08:00
@_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]
define fastcc void @foo() {
entry:
br i1 icmp eq (i64 or (i64 ptrtoint ([33 x i16]* @_ZN11xercesc_2_513SchemaSymbols21fgURI_SCHEMAFORSCHEMAE to i64),
i64 ptrtoint ([9 x i16]* @_ZN11xercesc_2_56XMLUni16fgNotationStringE to i64)), i64 0),
label %bb8.i329, label %bb4.i.i318.preheader
bb4.i.i318.preheader: ; preds = %bb6
unreachable
bb8.i329: ; preds = %bb6
unreachable
}