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e82a7f1476
This patch disables the handling of selects in optimization extensing scope of optimizeMemoryInst. The optimization itself is disable by default. The idea here is just to switch optimiztion level step by step. Specifically, first optimization will be enabled only for Phi nodes, then select instructions will be added. In case someone will complain about perfromance it will be easier to detect what part of optimizations is responsible for that. Differential Revision: https://reviews.llvm.org/D36073 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317555 91177308-0d34-0410-b5e6-96231b3b80d8
19 lines
742 B
LLVM
19 lines
742 B
LLVM
; RUN: opt -S -codegenprepare -mtriple=thumbv7m -disable-complex-addr-modes=false -addr-sink-new-select=true < %s | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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; Select between two geps with different base, same constant offset
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define void @test_select_twogep_base(i32* %ptr1, i32* %ptr2, i32 %value) {
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; CHECK-LABEL: @test_select_twogep_base
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; CHECK-NOT: select i1 %cmp, i32* %gep1, i32* %gep2
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; CHECK: select i1 %cmp, i32* %ptr1, i32* %ptr2
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entry:
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%cmp = icmp sgt i32 %value, 0
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%gep1 = getelementptr inbounds i32, i32* %ptr1, i32 1
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%gep2 = getelementptr inbounds i32, i32* %ptr2, i32 1
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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store i32 %value, i32* %select, align 4
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ret void
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}
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