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llvm-project/llvm/test/CodeGen/ARM/prera-ldst-aliasing.mir

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[ARM] Use alias analysis in ARMPreAllocLoadStoreOpt. This allows the optimization to rearrange loads and stores more aggressively. This doesn't really affect performance, but it helps codesize. Differential Revision: https://reviews.llvm.org/D30839 llvm-svn: 298021
2017-03-17 08:34:26 +08:00
# RUN: llc -run-pass arm-prera-ldst-opt %s -o - | FileCheck %s
--- |
target triple = "thumbv7---eabi"
define void @ldrd_strd_aa(i32* noalias nocapture %x, i32* noalias nocapture readonly %y) {
entry:
%0 = load i32, i32* %y, align 4
store i32 %0, i32* %x, align 4
%arrayidx2 = getelementptr inbounds i32, i32* %y, i32 1
%1 = load i32, i32* %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %x, i32 1
store i32 %1, i32* %arrayidx3, align 4
ret void
}
...
---
name: ldrd_strd_aa
alignment: 1
tracksRegLiveness: true
liveins:
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
- { reg: '$r0', virtual-reg: '%0' }
- { reg: '$r1', virtual-reg: '%1' }
[ARM] Use alias analysis in ARMPreAllocLoadStoreOpt. This allows the optimization to rearrange loads and stores more aggressively. This doesn't really affect performance, but it helps codesize. Differential Revision: https://reviews.llvm.org/D30839 llvm-svn: 298021
2017-03-17 08:34:26 +08:00
body: |
bb.0.entry:
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
liveins: $r0, $r1
[ARM] Use alias analysis in ARMPreAllocLoadStoreOpt. This allows the optimization to rearrange loads and stores more aggressively. This doesn't really affect performance, but it helps codesize. Differential Revision: https://reviews.llvm.org/D30839 llvm-svn: 298021
2017-03-17 08:34:26 +08:00
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
%1 : gpr = COPY $r1
%0 : gpr = COPY $r0
%2 : gpr = t2LDRi12 %1, 0, 14, $noreg :: (load 4 from %ir.y)
t2STRi12 killed %2, %0, 0, 14, $noreg :: (store 4 into %ir.x)
%3 : gpr = t2LDRi12 %1, 4, 14, $noreg :: (load 4 from %ir.arrayidx2)
t2STRi12 killed %3, %0, 4, 14, $noreg :: (store 4 into %ir.arrayidx3)
[ARM] Use alias analysis in ARMPreAllocLoadStoreOpt. This allows the optimization to rearrange loads and stores more aggressively. This doesn't really affect performance, but it helps codesize. Differential Revision: https://reviews.llvm.org/D30839 llvm-svn: 298021
2017-03-17 08:34:26 +08:00
; CHECK: t2LDRi12
; CHECK-NEXT: t2LDRi12
; CHECK-NEXT: t2STRi12
; CHECK-NEXT: t2STRi12
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
tBX_RET 14, $noreg
[ARM] Use alias analysis in ARMPreAllocLoadStoreOpt. This allows the optimization to rearrange loads and stores more aggressively. This doesn't really affect performance, but it helps codesize. Differential Revision: https://reviews.llvm.org/D30839 llvm-svn: 298021
2017-03-17 08:34:26 +08:00
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