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clang-p2996/llvm/test/CodeGen/PowerPC/shrink-wrap.mir
sgokhale c4a60c9d34 [CodeGen][ShrinkWrap] Enable PostShrinkWrap by default 
This is an attempt to reland D42600 and enabling this optimisation by default.

This also resolves the issue pointed out in the context of PGO build.

Differential Revision: https://reviews.llvm.org/D42600
2023-05-25 13:56:29 +05:30

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple powerpc64le-unknown-linux-gnu \
# RUN: -run-pass=shrink-wrap -o - %s | FileCheck %s
# RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple powerpc-ibm-aix-xcoff \
# RUN: -run-pass=shrink-wrap -mattr=-altivec -o - %s | FileCheck %s
# RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple powerpc64-ibm-aix-xcoff \
# RUN: -run-pass=shrink-wrap -mattr=-altivec -o - %s | FileCheck %s
--- |
; ModuleID = 'test.ll'
source_filename = "test.ll"
target datalayout = "e-m:e-i64:64-n32:64"
define signext i32 @shrinkwrapme(i32 signext %a, i32 signext %lim) {
entry:
%cmp5 = icmp sgt i32 %lim, 0
br i1 %cmp5, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
%0 = add i32 %lim, -1
%1 = zext i32 %0 to i64
%2 = add nuw nsw i64 %1, 1
call void @llvm.set.loop.iterations.i64(i64 %2)
br label %for.body
for.cond.cleanup: ; preds = %for.body, %entry
%Ret.0.lcssa = phi i32 [ 0, %entry ], [ %3, %for.body ]
ret i32 %Ret.0.lcssa
for.body: ; preds = %for.body, %for.body.preheader
%Ret.06 = phi i32 [ %3, %for.body ], [ 0, %for.body.preheader ]
%3 = tail call i32 asm "add $0, $1, $2", "=r,r,r,~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"(i32 %a, i32 %Ret.06)
%4 = call i1 @llvm.loop.decrement.i64(i64 1)
br i1 %4, label %for.body, label %for.cond.cleanup
}
; Function Attrs: noduplicate nounwind
declare void @llvm.set.loop.iterations.i64(i64) #0
; Function Attrs: noduplicate nounwind
declare i1 @llvm.loop.decrement.i64(i64) #0
; Function Attrs: nounwind
declare void @llvm.stackprotector(ptr, ptr) #1
attributes #0 = { noduplicate nounwind }
attributes #1 = { nounwind }
...
---
name: shrinkwrapme
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: shrinkwrapme
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.2(0x50000000), %bb.1(0x30000000)
; CHECK-NEXT: liveins: $x3, $x4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $cr0 = CMPWI renamable $r4, 1
; CHECK-NEXT: BCC 4, killed renamable $cr0, %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $r4 = LI 0
; CHECK-NEXT: B %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.for.body.preheader:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: liveins: $x3, $x4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $r4 = ADDI renamable $r4, -1, implicit killed $x4, implicit-def $x4
; CHECK-NEXT: renamable $x4 = RLDICL killed renamable $x4, 0, 32
; CHECK-NEXT: renamable $x4 = nuw nsw ADDI8 killed renamable $x4, 1
; CHECK-NEXT: MTCTR8loop killed renamable $x4, implicit-def dead $ctr8
; CHECK-NEXT: renamable $r4 = LI 0
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.for.cond.cleanup:
; CHECK-NEXT: liveins: $r4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $x3 = EXTSW_32_64 killed renamable $r4
; CHECK-NEXT: BLR8 implicit $lr8, implicit $rm, implicit $x3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.for.body:
; CHECK-NEXT: successors: %bb.4(0x7c000000), %bb.5(0x04000000)
; CHECK-NEXT: liveins: $r4, $x3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM &"add $0, $1, $2", 0 /* attdialect */, 131082 /* regdef:GPRC */, def renamable $r4, 131081 /* reguse:GPRC */, renamable $r3, 131081 /* reguse:GPRC */, killed renamable $r4, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15, 12 /* clobber */, implicit-def dead early-clobber $r16, 12 /* clobber */, implicit-def dead early-clobber $r17, 12 /* clobber */, implicit-def dead early-clobber $r18, 12 /* clobber */, implicit-def dead early-clobber $r19, 12 /* clobber */, implicit-def dead early-clobber $r20, 12 /* clobber */, implicit-def dead early-clobber $r21, 12 /* clobber */, implicit-def dead early-clobber $r22, 12 /* clobber */, implicit-def dead early-clobber $r23, 12 /* clobber */, implicit-def dead early-clobber $r24, 12 /* clobber */, implicit-def dead early-clobber $r25, 12 /* clobber */, implicit-def dead early-clobber $r26, 12 /* clobber */, implicit-def dead early-clobber $r27, 12 /* clobber */, implicit-def dead early-clobber $r28, 12 /* clobber */, implicit-def dead early-clobber $r29, 12 /* clobber */, implicit-def dead early-clobber $r30, 12 /* clobber */, implicit-def dead early-clobber $r31
; CHECK-NEXT: BDNZ8 %bb.4, implicit-def dead $ctr8, implicit $ctr8
; CHECK-NEXT: B %bb.5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: liveins: $r4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: B %bb.3
bb.0.entry:
successors: %bb.2(0x50000000), %bb.1(0x30000000)
liveins: $x3, $x4
renamable $cr0 = CMPWI renamable $r4, 1
BCC 4, killed renamable $cr0, %bb.2
bb.1:
successors: %bb.3(0x80000000)
renamable $r4 = LI 0
B %bb.3
bb.2.for.body.preheader:
successors: %bb.4(0x80000000)
liveins: $x3, $x4
renamable $r4 = ADDI renamable $r4, -1, implicit killed $x4, implicit-def $x4
renamable $x4 = RLDICL killed renamable $x4, 0, 32
renamable $x4 = nuw nsw ADDI8 killed renamable $x4, 1
MTCTR8loop killed renamable $x4, implicit-def dead $ctr8
renamable $r4 = LI 0
B %bb.4
bb.3.for.cond.cleanup:
liveins: $r4
renamable $x3 = EXTSW_32_64 killed renamable $r4
BLR8 implicit $lr8, implicit $rm, implicit $x3
bb.4.for.body:
successors: %bb.4(0x7c000000), %bb.3(0x04000000)
liveins: $r4, $x3
INLINEASM &"add $0, $1, $2", 0, 131082, def renamable $r4, 131081, renamable $r3, 131081, killed renamable $r4, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15, 12, implicit-def dead early-clobber $r16, 12, implicit-def dead early-clobber $r17, 12, implicit-def dead early-clobber $r18, 12, implicit-def dead early-clobber $r19, 12, implicit-def dead early-clobber $r20, 12, implicit-def dead early-clobber $r21, 12, implicit-def dead early-clobber $r22, 12, implicit-def dead early-clobber $r23, 12, implicit-def dead early-clobber $r24, 12, implicit-def dead early-clobber $r25, 12, implicit-def dead early-clobber $r26, 12, implicit-def dead early-clobber $r27, 12, implicit-def dead early-clobber $r28, 12, implicit-def dead early-clobber $r29, 12, implicit-def dead early-clobber $r30, 12, implicit-def dead early-clobber $r31
BDNZ8 %bb.4, implicit-def dead $ctr8, implicit $ctr8
B %bb.3
...
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