# It is not safe to make the transformation if the definition is killed by a call.
# Use debug output for simplicity and test resilience.
#
# RUN: llc -march=hexagon -run-pass amode-opt %s -print-after-all -o %t_1.mir 2>&1 | FileCheck %s
# CHECK: bb.4.if.else
# CHECK-NOT: liveins: $r2
--- |
; ModuleID = 'foo.reduced.i'
source_filename = "foo.reduced.i"
target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
target triple = "hexagon-unknown-unknown-elf"
%struct.struct_1 = type { i8, i8, [7 x %struct.struct_3] }
%struct.struct_3 = type { i8, %struct.struct_4 }
%struct.struct_4 = type { i32, i32 }
%struct.struct_2 = type { i32, i32 }
; Function Attrs: nounwind
define dso_local zeroext i8 @fun_4(i32 noundef %arg_1, i8 noundef zeroext %arg_2, ptr nocapture noundef readonly %arg_3, ptr nocapture noundef readonly %arg_4) local_unnamed_addr #0 {
entry:
%conv = zext i8 %arg_2 to i32
%cmp = icmp ult i8 %arg_2, 7
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
tail call void @fun_2(ptr noundef null, i32 noundef %conv) #3
unreachable
if.end: ; preds = %entry
%cgep = getelementptr inbounds %struct.struct_1, ptr %arg_3, i32 0, i32 2, i32 %conv
%cgep23 = getelementptr inbounds %struct.struct_3, ptr %cgep, i32 0, i32 1, i32 1
%0 = load i32, ptr %cgep23, align 4
%cmp3 = icmp eq i32 %0, 4
br i1 %cmp3, label %land.lhs.true, label %if.else
land.lhs.true: ; preds = %if.end
%cgep22 = getelementptr inbounds %struct.struct_3, ptr %cgep, i32 0, i32 1
%1 = load i32, ptr %cgep22, align 4
%call = tail call zeroext i8 @fun_5(i32 noundef %arg_1, i32 noundef %1) #4
%tobool.not = icmp eq i8 %call, 0
br i1 %tobool.not, label %if.else, label %if.end12
if.else: ; preds = %land.lhs.true, %if.end
%2 = load i8, ptr %cgep, align 4
%cmp.i = icmp eq i8 %2, 1
br i1 %cmp.i, label %if.then.i, label %fun_3.exit
if.then.i: ; preds = %if.else
%cgep2027 = bitcast ptr %arg_4 to ptr
%cgep26 = getelementptr inbounds %struct.struct_2, ptr %cgep2027, i32 0, i32 1
%3 = load i32, ptr %cgep26, align 4
%call.i = tail call i32 @fun_1(i32 noundef %arg_1) #4
%cmp2.i = icmp ult i32 %3, %call.i
%cgep25 = getelementptr inbounds %struct.struct_2, ptr %cgep2027, i32 0, i32 1
%4 = load i32, ptr %cgep25, align 4
%call6.i = tail call i32 @fun_1(i32 noundef %arg_1) #4
%cmp7.i = icmp ult i32 %4, %call6.i
%5 = select i1 %cmp2.i, i1 true, i1 %cmp7.i
br label %fun_3.exit
fun_3.exit: ; preds = %if.else, %if.then.i
%resume_ttl.1.i = phi i1 [ false, %if.else ], [ %5, %if.then.i ]
%conv15.i = zext i1 %resume_ttl.1.i to i8
br label %if.end12
if.end12: ; preds = %land.lhs.true, %fun_3.exit
%resume_loops.0 = phi i8 [ %conv15.i, %fun_3.exit ], [ 1, %land.lhs.true ]
ret i8 %resume_loops.0
}
; Function Attrs: noreturn
declare dso_local void @fun_2(ptr noundef, i32 noundef) local_unnamed_addr #1
declare dso_local zeroext i8 @fun_5(i32 noundef, i32 noundef) local_unnamed_addr #2
declare dso_local i32 @fun_1(i32 noundef) local_unnamed_addr #2
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"frame-pointer", i32 2}
!2 = !{!""}
...
---
name: fun_4
alignment: 16
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
callsEHReturn: false
callsUnwindInit: false
hasEHCatchret: false
hasEHScopes: false
hasEHFunclets: false
isOutlined: false
debugInstrRef: false
failsVerification: false
tracksDebugUserValues: true
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
- { reg: '$r3', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: false
hasCalls: true
stackProtector: ''
functionContext: ''
maxCallFrameSize: 4294967295
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
hasTailCall: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
entry_values: []
callSites: []
debugValueSubstitutions: []
constants: []
machineFunctionInfo: {}
body: |
bb.0.entry:
successors: %bb.1(0x00000800), %bb.2(0x7ffff800)
liveins: $r0:0x0000000000000001, $r1:0x0000000000000001, $r2:0x0000000000000001, $r3:0x0000000000000001
renamable $p0 = C2_cmpgtui renamable $r1, 6
renamable $r16 = COPY killed $r3
renamable $r17 = COPY killed $r0
J2_jumpt killed renamable $p0, %bb.2, implicit-def dead $pc
J2_jump %bb.1, implicit-def dead $pc
bb.1.if.then:
successors:
liveins: $r1:0x0000000000000001
$r0 = A2_tfrsi 0
ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
PS_call_nr @fun_2, hexagoncsr, implicit killed $r0, implicit killed $r1, implicit-def $r29
ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29
bb.2.if.end:
successors: %bb.3(0x40000000), %bb.4(0x40000000)
liveins: $r1:0x0000000000000001, $r2:0x0000000000000001, $r16:0x0000000000000001, $r17:0x0000000000000001
renamable $r2 = M2_macsip killed renamable $r2, killed renamable $r1, 12
renamable $r3 = L2_loadri_io renamable $r2, 12 :: (load (s32) from %ir.cgep23)
renamable $p0 = C2_cmpeqi killed renamable $r3, 4
renamable $r18 = A2_addi killed renamable $r2, 4
J2_jumpf killed renamable $p0, %bb.4, implicit-def dead $pc
J2_jump %bb.3, implicit-def dead $pc
bb.3.land.lhs.true:
successors: %bb.4(0x30000000), %bb.8(0x50000000)
liveins: $r16:0x0000000000000001, $r17:0x0000000000000001, $r18:0x0000000000000001
renamable $r1 = L2_loadri_io renamable $r18, 4 :: (load (s32) from %ir.cgep22)
ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
$r0 = COPY renamable $r17
J2_call @fun_5, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit killed $r1, implicit-def $r29, implicit-def $r0
renamable $p0 = C2_cmpeqi killed renamable $r0, 0
ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29
renamable $r0 = A2_tfrsi 1
J2_jumpf killed renamable $p0, %bb.8, implicit-def dead $pc
J2_jump %bb.4, implicit-def dead $pc
bb.4.if.else:
successors: %bb.6(0x40000000), %bb.5(0x40000000)
liveins: $r16:0x0000000000000001, $r17:0x0000000000000001, $r18:0x0000000000000001
renamable $r2 = L2_loadrb_io killed renamable $r18, 0 :: (load (s8) from %ir.cgep, align 4)
renamable $p0 = C2_cmpeqi killed renamable $r2, 1
J2_jumpt killed renamable $p0, %bb.6, implicit-def $pc
bb.5:
successors: %bb.7(0x80000000)
renamable $p0 = PS_false
J2_jump %bb.7, implicit-def $pc
bb.6.if.then.i:
successors: %bb.7(0x80000000)
liveins: $r16:0x0000000000000001, $r17:0x0000000000000001
ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit $r31, implicit $r30, implicit $r29
$r0 = COPY renamable $r17
renamable $r18 = L2_loadri_io renamable $r16, 4 :: (load (s32) from %ir.cgep26)
J2_call @fun_1, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def $r0
ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit $r29
renamable $p0 = C2_cmpgtu killed renamable $r0, killed renamable $r18
STriw_pred %stack.0, 0, killed renamable $p0 :: (store (s32) into %stack.0)
$r0 = COPY killed renamable $r17
ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
renamable $r16 = L2_loadri_io killed renamable $r16, 4 :: (load (s32) from %ir.cgep25)
J2_call @fun_1, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def $r0
renamable $p0 = C2_cmpgtu killed renamable $r0, killed renamable $r16
ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29
renamable $p1 = LDriw_pred %stack.0, 0 :: (load (s32) from %stack.0)
renamable $p0 = C2_or killed renamable $p1, killed renamable $p0
bb.7.fun_3.exit:
successors: %bb.8(0x80000000)
liveins: $p0
renamable $r0 = C2_cmoveit renamable $p0, 1
renamable $r0 = C2_cmoveif killed renamable $p0, 0, implicit killed renamable $r0(tied-def 0)
bb.8.if.end12:
liveins: $r0:0x0000000000000001
PS_jmpret killed $r31, implicit-def dead $pc, implicit killed $r0
...
Codebase Browser
llvm