39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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;
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; Test that DAGCombiner does not produce an addcarry node if the carry
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; producer is not legal. This can happen e.g. with an uaddo with a type
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; that is not legal.
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;
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; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 < %s | FileCheck %s
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define void @fun(i16 %arg0, i16* %src, i32* %dst) {
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; CHECK-LABEL: fun:
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; CHECK: # %bb.0: # %bb
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; CHECK-NEXT: llhr %r0, %r2
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; CHECK-NEXT: llh %r2, 0(%r3)
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; CHECK-NEXT: chi %r0, 9616
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; CHECK-NEXT: lhi %r1, 0
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; CHECK-NEXT: lochil %r1, 1
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; CHECK-NEXT: afi %r2, 65535
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; CHECK-NEXT: llhr %r3, %r2
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; CHECK-NEXT: lhi %r0, 0
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; CHECK-NEXT: cr %r3, %r2
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; CHECK-NEXT: lochilh %r0, 1
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; CHECK-NEXT: ar %r0, %r1
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; CHECK-NEXT: st %r0, 0(%r4)
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; CHECK-NEXT: br %r14
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bb:
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%tmp = icmp ult i16 %arg0, 9616
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%tmp1 = zext i1 %tmp to i32
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%tmp2 = load i16, i16* %src
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%0 = call { i16, i1 } @llvm.uadd.with.overflow.i16(i16 %tmp2, i16 -1)
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%math = extractvalue { i16, i1 } %0, 0
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%ov = extractvalue { i16, i1 } %0, 1
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%tmp5 = zext i1 %ov to i32
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%tmp6 = add nuw nsw i32 %tmp5, %tmp1
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store i32 %tmp6, i32* %dst
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ret void
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}
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declare { i16, i1 } @llvm.uadd.with.overflow.i16(i16, i16) #1
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