|  | # RUN: llc -start-after ppc-mi-peepholes -ppc-late-peephole %s -o - | FileCheck %s | 
|  | --- | | 
|  | ; ModuleID = 'a.ll' | 
|  | source_filename = "a.c" | 
|  | target datalayout = "e-m:e-i64:64-n32:64" | 
|  | target triple = "powerpc64le-unknown-linux-gnu" | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readnone | 
|  | define signext i32 @unsafeAddR0R3(i32 signext %a, i32 signext %b) local_unnamed_addr #0 { | 
|  | entry: | 
|  | %add = add nsw i32 %b, %a | 
|  | ret i32 %add | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readnone | 
|  | define signext i32 @unsafeAddR3R0(i32 signext %a, i32 signext %b) local_unnamed_addr #0 { | 
|  | entry: | 
|  | %add = add nsw i32 %b, %a | 
|  | ret i32 %add | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readnone | 
|  | define signext i32 @safeAddR0R3(i32 signext %a, i32 signext %b) local_unnamed_addr #0 { | 
|  | entry: | 
|  | %add = add nsw i32 %b, %a | 
|  | ret i32 %add | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readnone | 
|  | define signext i32 @safeAddR3R0(i32 signext %a, i32 signext %b) local_unnamed_addr #0 { | 
|  | entry: | 
|  | %add = add nsw i32 %b, %a | 
|  | ret i32 %add | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readonly | 
|  | define i64 @unsafeLDXR3R0(i64* nocapture readonly %ptr, i64 %off) local_unnamed_addr #1 { | 
|  | entry: | 
|  | %0 = bitcast i64* %ptr to i8* | 
|  | %add.ptr = getelementptr inbounds i8, i8* %0, i64 %off | 
|  | %1 = bitcast i8* %add.ptr to i64* | 
|  | %2 = load i64, i64* %1, align 8, !tbaa !3 | 
|  | ret i64 %2 | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readonly | 
|  | define i64 @safeLDXZeroR3(i64* nocapture readonly %ptr, i64 %off) local_unnamed_addr #1 { | 
|  | entry: | 
|  | %0 = bitcast i64* %ptr to i8* | 
|  | %add.ptr = getelementptr inbounds i8, i8* %0, i64 %off | 
|  | %1 = bitcast i8* %add.ptr to i64* | 
|  | %2 = load i64, i64* %1, align 8, !tbaa !3 | 
|  | ret i64 %2 | 
|  | } | 
|  |  | 
|  | ; Function Attrs: norecurse nounwind readonly | 
|  | define i64 @safeLDXR3R0(i64* nocapture readonly %ptr, i64 %off) local_unnamed_addr #1 { | 
|  | entry: | 
|  | %0 = bitcast i64* %ptr to i8* | 
|  | %add.ptr = getelementptr inbounds i8, i8* %0, i64 %off | 
|  | %1 = bitcast i8* %add.ptr to i64* | 
|  | %2 = load i64, i64* %1, align 8, !tbaa !3 | 
|  | ret i64 %2 | 
|  | } | 
|  |  | 
|  | attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64le" "target-features"="+altivec,+bpermd,+crypto,+direct-move,+extdiv,+htm,+power8-vector,+vsx,-power9-vector,-qpx" "unsafe-fp-math"="false" "use-soft-float"="false" } | 
|  | attributes #1 = { norecurse nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64le" "target-features"="+altivec,+bpermd,+crypto,+direct-move,+extdiv,+htm,+power8-vector,+vsx,-power9-vector,-qpx" "unsafe-fp-math"="false" "use-soft-float"="false" } | 
|  |  | 
|  | !llvm.module.flags = !{!0, !1} | 
|  | !llvm.ident = !{!2} | 
|  |  | 
|  | !0 = !{i32 1, !"wchar_size", i32 4} | 
|  | !1 = !{i32 7, !"PIC Level", i32 2} | 
|  | !2 = !{!"clang version 6.0.0 (trunk 318832)"} | 
|  | !3 = !{!4, !4, i64 0} | 
|  | !4 = !{!"long long", !5, i64 0} | 
|  | !5 = !{!"omnipotent char", !6, i64 0} | 
|  | !6 = !{!"Simple C/C++ TBAA"} | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            unsafeAddR0R3 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: gprc, preferred-register: '' } | 
|  | - { id: 3, class: gprc, preferred-register: '' } | 
|  | - { id: 4, class: gprc, preferred-register: '' } | 
|  | - { id: 5, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x0, $x4 | 
|  |  | 
|  | %1:g8rc = COPY $x4 | 
|  | %0:g8rc = COPY $x0 | 
|  | %2:gprc = LI 44 | 
|  | %3:gprc = COPY %1.sub_32 | 
|  | %4:gprc = ADD4 killed $r0, killed %2 | 
|  | ; CHECK: li 3, 44 | 
|  | ; CHECK: add 3, 0, 3 | 
|  | %5:g8rc = EXTSW_32_64 killed %4 | 
|  | $x3 = COPY %5 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            unsafeAddR3R0 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: gprc, preferred-register: '' } | 
|  | - { id: 3, class: gprc, preferred-register: '' } | 
|  | - { id: 4, class: gprc, preferred-register: '' } | 
|  | - { id: 5, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x0, $x4 | 
|  |  | 
|  | %1:g8rc = COPY $x4 | 
|  | %0:g8rc = COPY $x0 | 
|  | %2:gprc = COPY %0.sub_32 | 
|  | %3:gprc = LI 44 | 
|  | %4:gprc = ADD4 killed %3, killed $r0 | 
|  | ; CHECK: li 3, 44 | 
|  | ; CHECK: add 3, 3, 0 | 
|  | %5:g8rc = EXTSW_32_64 killed %4 | 
|  | $x3 = COPY %5 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            safeAddR0R3 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: gprc, preferred-register: '' } | 
|  | - { id: 3, class: gprc, preferred-register: '' } | 
|  | - { id: 4, class: gprc, preferred-register: '' } | 
|  | - { id: 5, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x3, $x4 | 
|  |  | 
|  | %1:g8rc = COPY $x4 | 
|  | %0:g8rc = COPY $x3 | 
|  | %2:gprc = COPY %0.sub_32 | 
|  | $r0 = LI 44 | 
|  | %4:gprc = ADD4 killed $r0, killed %2 | 
|  | ; CHECK: addi 3, 3, 44 | 
|  | %5:g8rc = EXTSW_32_64 killed %4 | 
|  | $x3 = COPY %5 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            safeAddR3R0 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: gprc, preferred-register: '' } | 
|  | - { id: 3, class: gprc, preferred-register: '' } | 
|  | - { id: 4, class: gprc, preferred-register: '' } | 
|  | - { id: 5, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x3, $x4 | 
|  |  | 
|  | %1:g8rc = COPY $x4 | 
|  | %0:g8rc = COPY $x3 | 
|  | %2:gprc = COPY %0.sub_32 | 
|  | $r0 = LI 44 | 
|  | %4:gprc = ADD4 killed %2, killed $r0 | 
|  | ; CHECK: addi 3, 3, 44 | 
|  | %5:g8rc = EXTSW_32_64 killed %4 | 
|  | $x3 = COPY %5 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            unsafeLDXR3R0 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc_and_g8rc_nox0, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x0', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x0, $x4 | 
|  |  | 
|  | %1:g8rc = COPY $x4 | 
|  | %0:g8rc_and_g8rc_nox0 = LI8 44 | 
|  | %2:g8rc = LDX %0, $x0 :: (load 8 from %ir.1, !tbaa !3) | 
|  | ; CHECK: li 3, 44 | 
|  | ; CHECK: ldx 3, 3, 0 | 
|  | $x3 = COPY %2 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            safeLDXZeroR3 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc_and_g8rc_nox0, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x3, $x4 | 
|  |  | 
|  | %1:g8rc = LI8 44 | 
|  | %0:g8rc_and_g8rc_nox0 = LI8 44 | 
|  | %2:g8rc = LDX $zero8, %1 :: (load 8 from %ir.1, !tbaa !3) | 
|  | ; CHECK: ld 3, 44(0) | 
|  | $x3 = COPY %2 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            safeLDXR3R0 | 
|  | alignment:       4 | 
|  | exposesReturnsTwice: false | 
|  | legalized:       false | 
|  | regBankSelected: false | 
|  | selected:        false | 
|  | tracksRegLiveness: true | 
|  | registers: | 
|  | - { id: 0, class: g8rc_and_g8rc_nox0, preferred-register: '' } | 
|  | - { id: 1, class: g8rc, preferred-register: '' } | 
|  | - { id: 2, class: g8rc, preferred-register: '' } | 
|  | liveins: | 
|  | - { reg: '$x3', virtual-reg: '%0' } | 
|  | - { reg: '$x4', virtual-reg: '%1' } | 
|  | frameInfo: | 
|  | isFrameAddressTaken: false | 
|  | isReturnAddressTaken: false | 
|  | hasStackMap:     false | 
|  | hasPatchPoint:   false | 
|  | stackSize:       0 | 
|  | offsetAdjustment: 0 | 
|  | maxAlignment:    0 | 
|  | adjustsStack:    false | 
|  | hasCalls:        false | 
|  | stackProtector:  '' | 
|  | maxCallFrameSize: 4294967295 | 
|  | hasOpaqueSPAdjustment: false | 
|  | hasVAStart:      false | 
|  | hasMustTailInVarArgFunc: false | 
|  | savePoint:       '' | 
|  | restorePoint:    '' | 
|  | fixedStack: | 
|  | stack: | 
|  | constants: | 
|  | body:             | | 
|  | bb.0.entry: | 
|  | liveins: $x3, $x4 | 
|  |  | 
|  | $x0 = LI8 44 | 
|  | %0:g8rc_and_g8rc_nox0 = COPY $x3 | 
|  | %2:g8rc = LDX %0, $x0 :: (load 8 from %ir.1, !tbaa !3) | 
|  | ; CHECK: ld 3, 44(3) | 
|  | $x3 = COPY %2 | 
|  | BLR8 implicit $lr8, implicit $rm, implicit $x3 | 
|  |  | 
|  | ... |