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This allows allows us to replace ISD::EXTRACT_ELEMENT, which is lowered using shifts, with ISD::EXTRACT_VECTOR_ELT, which is a no-op. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205187 91177308-0d34-0410-b5e6-96231b3b80d8
16 lines
480 B
LLVM
16 lines
480 B
LLVM
; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s
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; CHECK-LABEL: @select0
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; i64 select should be split into two i32 selects, and we shouldn't need
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; to use a shfit to extract the hi dword of the input.
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; CHECK-NOT: S_LSHR_B64
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; CHECK: V_CNDMASK
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; CHECK: V_CNDMASK
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define void @select0(i64 addrspace(1)* %out, i32 %cond, i64 %in) {
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entry:
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%0 = icmp ugt i32 %cond, 5
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%1 = select i1 %0, i64 0, i64 %in
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store i64 %1, i64 addrspace(1)* %out
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ret void
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}
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