# RUN: llc -run-pass=stack-coloring %s -o - | FileCheck %s
## Test %stack.1 is merged into %stack.0 and there is no MemoryMemOperand
## referencing %stack.1. This regression test is sensitive to the StackColoring
## algorithm. Please adjust or delete this test if the merging strategy
## changes.
# CHECK: {{^}}stack:
# CHECK-NEXT: - { id: 0,
# CHECK-NOT: - { id: 1,
# CHECK: - { id: 2,
# CHECK-NOT: %stack.1
--- |
; ModuleID = '<stdin>'
source_filename = "<stdin>"
target datalayout = "E-m:e-p:32:32-i64:64-n32"
target triple = "powerpc-unknown-freebsd13.0"
%struct.__va_list_tag = type { i8, i8, i16, i8*, i8* }
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #0
define dso_local void @atf_tc_fail_nonfatal(i8* %fmt, ...) !dbg !3 {
entry:
%buf.i.i = alloca [1024 x i8], align 1
%ap2.i.i = alloca [1 x %struct.__va_list_tag], align 4
br i1 undef, label %format_reason_ap.exit.i, label %if.then6.i.i
if.then6.i.i: ; preds = %entry
%0 = bitcast [1 x %struct.__va_list_tag]* %ap2.i.i to i8*
call void @llvm.lifetime.start.p0i8(i64 12, i8* nonnull %0)
call void @llvm.va_copy(i8* nonnull %0, i8* nonnull null)
ret void
format_reason_ap.exit.i: ; preds = %entry
%1 = bitcast [1024 x i8]* %buf.i.i to i8*
call void @llvm.lifetime.start.p0i8(i64 1024, i8* nonnull %1)
call void @fprintf(i8* nonnull %1)
ret void
}
declare void @fprintf(i8*)
; Function Attrs: nounwind
declare void @llvm.va_copy(i8*, i8*) #1
attributes #0 = { argmemonly nounwind willreturn }
attributes #1 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "tc.c", directory: "")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = distinct !DISubprogram(name: "atf_tc_fail_nonfatal", scope: !1, file: !1, line: 1067, type: !4, scopeLine: 1068, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
!4 = !DISubroutineType(types: !5)
!5 = !{}
...
---
name: atf_tc_fail_nonfatal
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gprc }
- { id: 1, class: gprc }
- { id: 2, class: gprc }
- { id: 3, class: gprc }
- { id: 4, class: gprc }
- { id: 5, class: gprc }
- { id: 6, class: gprc }
- { id: 7, class: gprc }
- { id: 8, class: f8rc }
- { id: 9, class: f8rc }
- { id: 10, class: f8rc }
- { id: 11, class: f8rc }
- { id: 12, class: f8rc }
- { id: 13, class: f8rc }
- { id: 14, class: f8rc }
- { id: 15, class: f8rc }
- { id: 16, class: crbitrc }
- { id: 17, class: gprc }
- { id: 18, class: gprc }
- { id: 19, class: gprc }
- { id: 20, class: gprc }
liveins:
- { reg: '$r3', virtual-reg: '%0' }
- { reg: '$r4', virtual-reg: '%1' }
- { reg: '$r5', virtual-reg: '%2' }
- { reg: '$r6', virtual-reg: '%3' }
- { reg: '$r7', virtual-reg: '%4' }
- { reg: '$r8', virtual-reg: '%5' }
- { reg: '$r9', virtual-reg: '%6' }
- { reg: '$r10', virtual-reg: '%7' }
- { reg: '$f1', virtual-reg: '%8' }
- { reg: '$f2', virtual-reg: '%9' }
- { reg: '$f3', virtual-reg: '%10' }
- { reg: '$f4', virtual-reg: '%11' }
- { reg: '$f5', virtual-reg: '%12' }
- { reg: '$f6', virtual-reg: '%13' }
- { reg: '$f7', virtual-reg: '%14' }
- { reg: '$f8', virtual-reg: '%15' }
frameInfo:
maxAlignment: 8
hasCalls: true
fixedStack:
- { id: 0, offset: 8, size: 4, alignment: 8, isImmutable: true }
stack:
- { id: 0, name: buf.i.i, size: 1024, alignment: 1 }
- { id: 1, name: ap2.i.i, size: 12, alignment: 8 }
- { id: 2, size: 96, alignment: 8 }
machineFunctionInfo: {}
body: |
bb.0.entry:
liveins: $r3, $r4, $r5, $r6, $r7, $r8, $r9, $r10, $f1, $f2, $f3, $f4, $f5, $f6, $f7, $f8
%15:f8rc = COPY $f8
%14:f8rc = COPY $f7
%13:f8rc = COPY $f6
%12:f8rc = COPY $f5
%11:f8rc = COPY $f4
%10:f8rc = COPY $f3
%9:f8rc = COPY $f2
%8:f8rc = COPY $f1
%7:gprc = COPY $r10
%6:gprc = COPY $r9
%5:gprc = COPY $r8
%4:gprc = COPY $r7
%3:gprc = COPY $r6
%2:gprc = COPY $r5
%1:gprc = COPY $r4
%0:gprc = COPY $r3
STW %0, 0, %stack.2 :: (store (s32) into %stack.2, align 8)
STW %1, 4, %stack.2 :: (store (s32) into %stack.2 + 4)
STW %2, 8, %stack.2 :: (store (s32) into %stack.2 + 8, align 8)
STW %3, 12, %stack.2 :: (store (s32))
STW %4, 16, %stack.2 :: (store (s32) into %stack.2 + 16, align 8)
STW %5, 20, %stack.2 :: (store (s32))
STW %6, 24, %stack.2 :: (store (s32) into %stack.2 + 24, align 8)
STW %7, 28, %stack.2 :: (store (s32))
STFD %8, 32, %stack.2 :: (store (s64))
STFD %9, 40, %stack.2 :: (store (s64))
STFD %10, 48, %stack.2 :: (store (s64))
STFD %11, 56, %stack.2 :: (store (s64))
STFD %12, 64, %stack.2 :: (store (s64))
STFD %13, 72, %stack.2 :: (store (s64))
STFD %14, 80, %stack.2 :: (store (s64))
STFD %15, 88, %stack.2 :: (store (s64))
%16:crbitrc = IMPLICIT_DEF
BC killed %16, %bb.2
B %bb.1
bb.1.if.then6.i.i:
LIFETIME_START %stack.1.ap2.i.i
%17:gprc = LWZ 8, $zero :: (load (s32), align 8)
STW killed %17, 8, %stack.1.ap2.i.i :: (store (s32) into %stack.1.ap2.i.i + 8, basealign 8)
%18:gprc = LWZ 4, $zero :: (load (s32))
STW killed %18, 4, %stack.1.ap2.i.i :: (store (s32) into %stack.1.ap2.i.i + 4, basealign 8)
%19:gprc = LWZ 0, $zero :: (load (s32), align 8)
STW killed %19, 0, %stack.1.ap2.i.i :: (store (s32) into %stack.1.ap2.i.i, basealign 8)
BLR implicit $lr, implicit $rm
bb.2.format_reason_ap.exit.i:
LIFETIME_START %stack.0.buf.i.i
ADJCALLSTACKDOWN 8, 0, implicit-def dead $r1, implicit $r1
%20:gprc = ADDI %stack.0.buf.i.i, 0
$r3 = COPY %20
BL @fprintf, csr_svr432, implicit-def dead $lr, implicit $rm, implicit $r3, implicit-def $r1
ADJCALLSTACKUP 8, 0, implicit-def dead $r1, implicit $r1
BLR implicit $lr, implicit $rm
...