forked from OSchip/llvm-project
28 lines
894 B
LLVM
28 lines
894 B
LLVM
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; RUN: opt -S < %s -newgvn | FileCheck %s
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; CHECK-LABEL: for.cond:
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; CHECK-NEXT: %lv = load i32, i32* bitcast (i64* @a to i32*)
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; CHECK-NEXT: %bf.clear = and i32 %lv, -131072
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; CHECK-NEXT: %bf.set = or i32 1, %bf.clear
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; CHECK-NEXT: br i1 %bc, label %for.cond, label %exit
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@a = external global i64
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define void @fn1(i1 %bc) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond1.1, %entry
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%tmp = phi i1 [ undef, %entry ], [ 1, %for.cond ]
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%conv = zext i1 %tmp to i32
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%lv = load i32, i32* bitcast (i64* @a to i32*)
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%bf.clear = and i32 %lv, -131072
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%bf.set = or i32 %conv, %bf.clear
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%bf.clear.1 = and i32 %bf.set, -131072
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%bf.set.1 = or i32 1, %bf.clear.1
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br i1 %bc, label %for.cond, label %exit
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exit: ; preds = %for.cond1
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store i32 %bf.set.1, i32* bitcast (i64* @a to i32*)
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ret void
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}
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