40 lines
1.0 KiB
LLVM
40 lines
1.0 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -sccp -S | FileCheck %s
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; Test some XOR simplifications / range propagation.
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define void@xor1(i1 %cmp) {
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; CHECK-LABEL: @xor1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
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; CHECK: if.true:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %cmp, label %if.true, label %end
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if.true:
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br label %end
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end:
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%p = phi i32 [ 11, %entry ], [ 11, %if.true]
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%xor.1 = xor i32 %p, %p
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%c.1 = icmp eq i32 %xor.1, 0
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call void @use(i1 %c.1)
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%c.2 = icmp eq i32 %xor.1, 10
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call void @use(i1 %c.2)
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%xor.2 = xor i32 %p, 1
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%c.3 = icmp eq i32 %xor.2, 11
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call void @use(i1 %c.3)
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%c.4 = icmp eq i32 %xor.2, 10
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call void @use(i1 %c.4)
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ret void
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}
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declare void @use(i1)
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