# 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 -mtriple=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 hasEHContTarget: 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 ...