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319b50aebd
Merging: * $x26, $x25 = frame-setup LDPXi $sp, 0 * $sp = frame-destroy ADDXri $sp, 64, 0 into an LDPXpost should preserve the flags from both instructions as following: * frame-setup frame-destroy LDPXpost Differential Revision: https://reviews.llvm.org/D44446 llvm-svn: 327533
100 lines
2.3 KiB
YAML
100 lines
2.3 KiB
YAML
# RUN: llc -run-pass=aarch64-ldst-opt -o - -mtriple=aarch64-- %s | FileCheck %s
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# Check that we merge the MIFlags from both the instructions in the final
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# instruction.
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---
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name: case11
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# CHECK-LABEL: name: case11
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body: |
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bb.0:
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frame-setup STRWui $w1, $x0, 1 :: (store 4)
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$w1 = frame-destroy LDRWui $x0, 1 :: (load 4)
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; CHECK: frame-setup STRWui
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; CHECK-NOT: frame-setup
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; CHECK-NEXT: frame-destroy ORRWrs
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; No merging happening here, make sure we keep the flags of the previous
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; instruction.
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RET_ReallyLR
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...
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---
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name: case12
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# CHECK-LABEL: name: case12
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body: |
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bb.0:
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frame-setup STRWui $w1, $x0, 1 :: (store 4)
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$w2 = frame-destroy LDRHHui $x0, 2 :: (load 2)
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; CHECK: frame-setup STRWui
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; CHECK-NOT: frame-setup
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; CHECK-NEXT: frame-destroy ANDWri
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; No merging happening here, make sure we keep the flags of the previous
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; instruction.
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RET_ReallyLR
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...
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---
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name: case13
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# CHECK-LABEL: name: case13
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body: |
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bb.0:
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frame-setup STRWui $w1, $x0, 1 :: (store 4)
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$w2 = frame-destroy LDRHHui $x0, 3 :: (load 2)
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; CHECK: frame-setup STRWui
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; CHECK-NOT: frame-setup
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; CHECK-NEXT: frame-destroy UBFMWri
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; No merging happening here, make sure we keep the flags of the previous
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; instruction.
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RET_ReallyLR
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...
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---
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name: case2
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# CHECK-LABEL: name: case2
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body: |
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bb.0:
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frame-setup STRHHui $wzr, $x0, 0 :: (store 4)
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frame-destroy STRHHui $wzr, $x0, 1 :: (store 4)
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; CHECK: frame-setup frame-destroy STRWui
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RET_ReallyLR
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...
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---
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name: case3
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# CHECK-LABEL: name: case3
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body: |
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bb.0:
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$x0 = frame-setup LDRXui $x2, 0 :: (load 8)
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$x1 = frame-destroy LDRXui $x2, 1 :: (load 8)
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; CHECK: frame-setup frame-destroy LDPXi
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RET_ReallyLR
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...
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---
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name: case4
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# CHECK-LABEL: name: case4
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body: |
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bb.0:
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$x26, $x25 = frame-setup LDPXi $sp, 0
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$sp = frame-destroy ADDXri $sp, 64, 0
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; CHECK: = frame-setup frame-destroy LDPXpost
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RET_ReallyLR
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...
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---
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name: case41
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# CHECK-LABEL: name: case41
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body: |
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bb.0:
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$x26 = frame-setup LDRXui $sp, 0
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$sp = frame-destroy ADDXri $sp, 64, 0
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; CHECK: = frame-setup frame-destroy LDRXpost
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RET_ReallyLR
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...
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