forked from OSchip/llvm-project
60 lines
1.8 KiB
LLVM
60 lines
1.8 KiB
LLVM
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; RUN: opt -newgvn -S %s | FileCheck %s
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; REQUIRES: asserts
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; CHECK-LABEL: define void @tinkywinky() {
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; CHECK: entry:
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; CHECK-NEXT: br i1 undef, label %for.cond18, label %for.cond.preheader
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; CHECK: for.cond.preheader:
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; CHECK-NEXT: br label %for.cond2thread-pre-split
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; CHECK: for.cond2thread-pre-split:
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; CHECK-NEXT: %conv24 = phi i32 [ 0, %for.cond.preheader ], [ %conv, %for.inc.split ]
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; CHECK-NEXT: br label %for.inc.split
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; CHECK: for.inc.split:
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; CHECK-NEXT: %add = shl nsw i32 %conv24, 16
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; CHECK-NEXT: %sext23 = add i32 %add, 65536
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; CHECK-NEXT: %conv = ashr exact i32 %sext23, 16
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; CHECK-NEXT: %cmp = icmp slt i32 %sext23, 3604480
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; CHECK-NEXT: br i1 %cmp, label %for.cond2thread-pre-split, label %l1.loopexit
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; CHECK: l1.loopexit:
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; CHECK-NEXT: br label %l1
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; CHECK: l1:
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; CHECK-NEXT: %0 = load i16, i16* null, align 2
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; CHECK-NEXT: %g.0.g.0..pr = load i16, i16* null, align 2
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; CHECK-NEXT: ret void
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; CHECK: for.cond18:
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; CHECK-NEXT: br label %l1
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; CHECK-NEXT: }
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define void @tinkywinky() {
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entry:
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br i1 undef, label %for.cond18, label %for.cond.preheader
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for.cond.preheader:
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br label %for.cond2thread-pre-split
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for.cond2thread-pre-split:
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%conv24 = phi i32 [ 0, %for.cond.preheader ], [ %conv, %for.inc.split ]
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br label %for.inc.split
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for.inc.split:
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%add = shl nsw i32 %conv24, 16
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%sext23 = add i32 %add, 65536
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%conv = ashr exact i32 %sext23, 16
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%cmp = icmp slt i32 %sext23, 3604480
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br i1 %cmp, label %for.cond2thread-pre-split, label %l1.loopexit
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l1.loopexit:
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br label %l1
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l1:
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%h.0 = phi i16* [ undef, %for.cond18 ], [ null, %l1.loopexit ]
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%0 = load i16, i16* %h.0, align 2
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store i16 %0, i16* null, align 2
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%g.0.g.0..pr = load i16, i16* null, align 2
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%tobool15 = icmp eq i16 %g.0.g.0..pr, 0
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ret void
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for.cond18:
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br label %l1
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}
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