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Aditya Nandakumar 46a94fccf7 [GISel]: Change how CSE is enabled by default for each pass
https://reviews.llvm.org/D57178

Now add a hook in TargetPassConfig to query if CSE needs to be
enabled. By default this hook returns false only for O0 opt level but
this can be overridden by the target.
As a consequence of the default of enabled for non O0, a few tests
needed to be updated to not use CSE (by passing in -O0) to the run
line.

reviewed by: arsenm

llvm-svn: 352126
2019-01-24 23:11:25 +00:00

72 lines
2.0 KiB
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define void @test_sub_i1() { ret void}
define i32 @test_sub_i32(i32 %arg1, i32 %arg2) {
%ret = sub i32 %arg1, %arg2
ret i32 %ret
}
...
---
name: test_sub_i1
alignment: 4
legalized: false
regBankSelected: false
registers:
- { id: 0, class: _, preferred-register: '' }
- { id: 1, class: _, preferred-register: '' }
- { id: 2, class: _, preferred-register: '' }
body: |
bb.1 (%ir-block.0):
; CHECK-LABEL: name: test_sub_i1
; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
; CHECK: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC1]]
; CHECK: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
; CHECK: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
; CHECK: [[COPY1:%[0-9]+]]:_(s8) = COPY [[SUB]](s8)
; CHECK: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY1]], [[C]]
; CHECK: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
; CHECK: RET 0
%0(s32) = COPY $edx
%1(s1) = G_TRUNC %0(s32)
%2(s1) = G_SUB %1, %1
%3:_(p0) = G_IMPLICIT_DEF
G_STORE %2, %3 :: (store 1)
RET 0
...
---
name: test_sub_i32
alignment: 4
legalized: false
regBankSelected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.1 (%ir-block.0):
liveins: $edi, $esi
; CHECK-LABEL: name: test_sub_i32
; CHECK: liveins: $edi, $esi
; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $edi
; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY $esi
; CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[COPY]], [[COPY1]]
; CHECK: $eax = COPY [[SUB]](s32)
; CHECK: RET 0, implicit $eax
%0(s32) = COPY $edi
%1(s32) = COPY $esi
%2(s32) = G_SUB %0, %1
$eax = COPY %2(s32)
RET 0, implicit $eax
...