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40e455d992
SI_IF and SI_ELSE are terminators which also produce a value. For these instructions ISel always inserts a COPY to move their value to another basic block. This COPY ends up between SI_(IF|ELSE) and the S_BRANCH* instruction at the end of the block. This breaks MachineBasicBlock::getFirstTerminator() and also the machine verifier which assumes that terminators are grouped together at the end of blocks. To solve this we coalesce the copy away right after ISel to make sure there are no instructions in between terminators at the end of blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207591 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
601 B
LLVM
18 lines
601 B
LLVM
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI %s
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declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone
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; SI-LABEL: @uaddo_i64_zext
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; SI: ADD
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; SI: ADDC
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; SI: ADDC
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define void @uaddo_i64_zext(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind {
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%uadd = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) nounwind
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%val = extractvalue { i64, i1 } %uadd, 0
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%carry = extractvalue { i64, i1 } %uadd, 1
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%ext = zext i1 %carry to i64
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%add2 = add i64 %val, %ext
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store i64 %add2, i64 addrspace(1)* %out, align 8
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ret void
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}
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