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[PowerPC] add testcases for folding frame offset - NFC

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llvm-svn: 369077
This commit is contained in:
Chen Zheng 2019-08-16 01:52:50 +00:00
parent 4475276f7e
commit a870fcab46
1 changed files with 114 additions and 0 deletions
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test/CodeGen/PowerPC/fold-frame-offset-using-rr.mir Normal file
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# RUN: llc -mtriple=powerpc64le--linux-gnu -stop-after ppc-pre-emit-peephole %s -o - -verify-machineinstrs | FileCheck %s
# ADDI instr: ToBeChangedReg = ADDI FrameBaseReg, OffsetAddi
# ADD instr: ToBeDeletedReg = ADD ToBeChangedReg(killed), ScaleReg
# Imm instr: Reg = op OffsetImm, ToBeDeletedReg(killed)
#
# can be folded to:
#
# new ADDI instr: ToBeChangedReg = ADDI FrameBaseReg, (OffsetAddi + OffsetImm)
# Index instr: Reg = opx ScaleReg, ToBeChangedReg(killed)
---
name: testIndexForm1
#CHECK : name : testIndexForm1
# ToBeDeletedReg equals to ScaleReg
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
$x4 = ADD8 killed $x3, killed $x4
; CHECK: $x4 = ADD8 killed $x3, killed $x4
$x6 = LD 4, killed $x4
; CHECK: $x6 = LD 4, killed $x4
BLR8 implicit $lr8, implicit $rm
...
---
name: testIndexForm2
#CHECK : name : testIndexForm2
# ToBeDeletedReg equals to ToBeChangedReg
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
$x3 = ADD8 killed $x3, killed $x4
; CHECK: $x3 = ADD8 killed $x3, killed $x4
$x6 = LD 4, killed $x3
; CHECK: $x6 = LD 4, killed $x3
BLR8 implicit $lr8, implicit $rm
...
---
name: testIndexForm3
#CHECK : name : testIndexForm3
# There is other use for ToBeDeletedReg between ADD instr and Imm instr
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
$x3 = ADD8 killed $x3, killed $x4
; CHECK: $x3 = ADD8 killed $x3, killed $x4
STD $x3, killed $x6, 100
; CHECK: STD $x3, killed $x6, 100
$x6 = LD 4, killed $x3
; CHECK: $x6 = LD 4, killed $x3
BLR8 implicit $lr8, implicit $rm
...
---
name: testIndexForm4
#CHECK : name : testIndexForm3
# There is other use for ToBeChangedReg between ADDI instr and ADD instr
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
STD $x3, killed $x6, 100
; CHECK: STD $x3, killed $x6, 100
$x3 = ADD8 killed $x3, killed $x4
; CHECK: $x3 = ADD8 killed $x3, killed $x4
$x6 = LD 4, killed $x3
; CHECK: $x6 = LD 4, killed $x3
BLR8 implicit $lr8, implicit $rm
...
---
name: testIndexForm5
#CHECK : name : testIndexForm5
# ToBeChangedReg has no killed flag
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
$x4 = ADD8 $x3, killed $x4
; CHECK: $x4 = ADD8 $x3, killed $x4
STD killed $x3, killed $x6, 100
; CHECK: STD killed $x3, killed $x6, 100
$x6 = LD 4, killed $x4
; CHECK: $x6 = LD 4, killed $x4
BLR8 implicit $lr8, implicit $rm
...
---
name: testIndexForm6
#CHECK : name : testIndexForm6
# ToBeDeletedReg has no killed flag
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x3, $x1, $x4, $x6
$x3 = ADDI8 $x1, -80
; CHECK: $x3 = ADDI8 $x1, -80
$x4 = ADD8 killed $x3, killed $x4
; CHECK: $x4 = ADD8 killed $x3, killed $x4
$x6 = LD 4, $x4
; CHECK: $x6 = LD 4, $x4
STD killed $x4, killed $x6, 100
BLR8 implicit $lr8, implicit $rm
...