77 lines
3.2 KiB
LLVM
77 lines
3.2 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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; Generated with this C source:
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; static __forceinline void __cpuid() { __asm__(""); }
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; void f() {
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; __try {
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; __cpuid();
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; } __except (1) {
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; }
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; }
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; When running clang at -O1, we can end up deleting unreachable SEH catchpads
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; without running GlobalDCE to remove the associated filter. This used to
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; result in references to undefined labels. Now we check that we emit the
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; label. This was PR30431.
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; CHECK-LABEL: _f: # @f
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; CHECK: Lf$parent_frame_offset = 0
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; CHECK: retl
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; CHECK-LABEL: "?filt$0@0@f@@": # @"\01?filt$0@0@f@@"
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; CHECK: movl $Lf$parent_frame_offset,
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; ModuleID = 't.c'
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source_filename = "t.c"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc19.0.24210"
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define void @f() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
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__try.cont:
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%__exception_code = alloca i32, align 4
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call void (...) @llvm.localescape(i32* nonnull %__exception_code)
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call void asm sideeffect "", "~{dirflag},~{fpsr},~{flags}"() #3, !srcloc !1
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ret void
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}
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; Function Attrs: nounwind
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define internal i32 @"\01?filt$0@0@f@@"() #1 {
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entry:
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%0 = tail call i8* @llvm.frameaddress(i32 1)
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%1 = tail call i8* @llvm.x86.seh.recoverfp(i8* bitcast (void ()* @f to i8*), i8* %0)
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%2 = tail call i8* @llvm.localrecover(i8* bitcast (void ()* @f to i8*), i8* %1, i32 0)
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%__exception_code = bitcast i8* %2 to i32*
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%3 = getelementptr inbounds i8, i8* %0, i32 -20
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%4 = bitcast i8* %3 to { i32*, i8* }**
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%5 = load { i32*, i8* }*, { i32*, i8* }** %4, align 4
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%6 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %5, i32 0, i32 0
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%7 = load i32*, i32** %6, align 4
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%8 = load i32, i32* %7, align 4
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store i32 %8, i32* %__exception_code, align 4
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ret i32 1
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}
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; Function Attrs: nounwind readnone
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declare i8* @llvm.frameaddress(i32) #2
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; Function Attrs: nounwind readnone
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declare i8* @llvm.x86.seh.recoverfp(i8*, i8*) #2
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; Function Attrs: nounwind readnone
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declare i8* @llvm.localrecover(i8*, i8*, i32) #2
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declare i32 @_except_handler3(...)
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; Function Attrs: nounwind
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declare void @llvm.localescape(...) #3
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attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 4.0.0 (trunk 282900) (llvm/trunk 282903)"}
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!1 = !{i32 48}
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