2012-08-07 22:21:00 +00:00
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; RUN: llc < %s -mtriple=x86_64-apple-macosx | FileCheck %s
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; Cmp lowering should not look past the truncate unless the high bits are known
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; zero.
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; rdar://12027825
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define void @foo(i8 %arg4, i32 %arg5, i32* %arg14) nounwind {
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bb:
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2013-07-14 06:24:09 +00:00
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; CHECK-LABEL: foo:
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2012-08-07 22:21:00 +00:00
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; CHECK-NOT: testl
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; CHECK: testb
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%tmp48 = zext i8 %arg4 to i32
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%tmp49 = and i32 %tmp48, 32
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%tmp50 = add i32 %tmp49, 1593371643
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%tmp55 = sub i32 %tmp50, 0
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%tmp56 = add i32 %tmp55, 7787538
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%tmp57 = xor i32 %tmp56, 1601159181
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%tmp58 = xor i32 %arg5, 1601159181
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%tmp59 = and i32 %tmp57, %tmp58
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%tmp60 = add i32 %tmp59, -1263900958
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%tmp67 = sub i32 %tmp60, 0
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%tmp103 = xor i32 %tmp56, 13
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%tmp104 = trunc i32 %tmp103 to i8
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%tmp105 = sub i8 0, %tmp104
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%tmp106 = add i8 %tmp105, -103
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%tmp113 = sub i8 %tmp106, 0
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%tmp114 = add i8 %tmp113, -72
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%tmp141 = icmp ne i32 %tmp67, -1263900958
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%tmp142 = select i1 %tmp141, i8 %tmp114, i8 undef
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%tmp143 = xor i8 %tmp142, 81
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%tmp144 = zext i8 %tmp143 to i32
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%tmp145 = add i32 %tmp144, 2062143348
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%tmp152 = sub i32 %tmp145, 0
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store i32 %tmp152, i32* %arg14
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ret void
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}
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