forked from OSchip/llvm-project
36 lines
1.0 KiB
LLVM
36 lines
1.0 KiB
LLVM
; RUN: opt < %s -S -instcombine | FileCheck %s
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; Derived from gcc.c-torture/execute/frame-address.c
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; CHECK-LABEL: @func(
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; CHECK: return:
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; CHECK-NOT: ret i32 0
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; CHECK: ret i32 %retval
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define i32 @func(i8* %c, i8* %f) nounwind uwtable readnone noinline ssp {
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entry:
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%d = alloca i8, align 1
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store i8 0, i8* %d, align 1
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%cmp = icmp ugt i8* %d, %c
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br i1 %cmp, label %if.else, label %if.then
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if.then: ; preds = %entry
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%cmp2 = icmp ule i8* %d, %f
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%not.cmp1 = icmp uge i8* %c, %f
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%.cmp2 = and i1 %cmp2, %not.cmp1
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%land.ext = zext i1 %.cmp2 to i32
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br label %return
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if.else: ; preds = %entry
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%cmp5 = icmp uge i8* %d, %f
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%not.cmp3 = icmp ule i8* %c, %f
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%.cmp5 = and i1 %cmp5, %not.cmp3
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%land.ext7 = zext i1 %.cmp5 to i32
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br label %return
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return: ; preds = %if.else, %if.then
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%retval.0 = phi i32 [ %land.ext, %if.then ], [ %land.ext7, %if.else ]
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ret i32 %retval.0
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}
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