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[SystemZ] Update kill-flag in splitMove().

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EarlierMI needs to clear the kill flag on the first operand in case of a store.

Review: Ulrich Weigand
llvm-svn: 301177
This commit is contained in:
Jonas Paulsson 2017-04-24 12:40:28 +00:00
parent c3541c9811
commit a537a87015
2 changed files with 232 additions and 2 deletions
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5
lib/Target/SystemZ/SystemZInstrInfo.cpp
View File

@ -104,8 +104,9 @@ void SystemZInstrInfo::splitMove(MachineBasicBlock::iterator MI,
MachineOperand &LowOffsetOp = MI->getOperand(2);
LowOffsetOp.setImm(LowOffsetOp.getImm() + 8);
// Clear the kill flags for the base and index registers in the first
// instruction.
// Clear the kill flags on the registers in the first instruction.
if (EarlierMI->getOperand(0).isReg() && EarlierMI->getOperand(0).isUse())
EarlierMI->getOperand(0).setIsKill(false);
EarlierMI->getOperand(1).setIsKill(false);
EarlierMI->getOperand(3).setIsKill(false);

229
test/CodeGen/SystemZ/splitMove_undefReg_mverifier_2.ll Normal file
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@ -0,0 +1,229 @@
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs -disable-lsr | FileCheck %s
;
; Regression test for a machine verifier complaint discovered with llvm-stress.
; Test that splitting of a 128 bit store does not result in use of undef phys reg.
; This test case involved spilling of 128 bits, where the data operand was killed.
define void @autogen_SD15107(i8*, i32*, i64*, i32, i64, i8) {
; CHECK: .text
BB:
%A4 = alloca double
%A1 = alloca i32
%L = load i8, i8* %0
br label %CF331
CF331: ; preds = %CF331, %BB
%Shuff = shufflevector <8 x i8> zeroinitializer, <8 x i8> zeroinitializer, <8 x i32> <i32 undef, i32 undef, i32 1, i32 3, i32 5, i32 7, i32 9, i32 11>
%L5 = load i8, i8* %0
%FC9 = fptosi float 0xC59D259100000000 to i8
%Shuff13 = shufflevector <8 x i64> zeroinitializer, <8 x i64> zeroinitializer, <8 x i32> <i32 10, i32 undef, i32 14, i32 0, i32 undef, i32 4, i32 6, i32 8>
%Tr = trunc <8 x i16> zeroinitializer to <8 x i1>
%Sl16 = select i1 true, i64 448097, i64 253977
%E18 = extractelement <2 x i1> zeroinitializer, i32 1
br i1 %E18, label %CF331, label %CF350
CF350: ; preds = %CF331
%Cmp22 = icmp slt i8 %L, -1
br label %CF
CF: ; preds = %CF333, %CF364, %CF, %CF350
%Shuff25 = shufflevector <16 x i1> zeroinitializer, <16 x i1> zeroinitializer, <16 x i32> <i32 25, i32 27, i32 29, i32 31, i32 1, i32 undef, i32 undef, i32 7, i32 9, i32 11, i32 undef, i32 15, i32 17, i32 19, i32 21, i32 23>
%B27 = mul <8 x i8> zeroinitializer, %Shuff
%L31 = load i8, i8* %0
store i8 %L5, i8* %0
%E32 = extractelement <8 x i64> %Shuff13, i32 5
%Sl37 = select i1 %E18, i64* %2, i64* %2
%E40 = extractelement <8 x i64> %Shuff13, i32 4
%I42 = insertelement <8 x i64> %Shuff13, i64 0, i32 1
%Sl44 = select i1 true, double* %A4, double* %A4
%L46 = load i64, i64* %Sl37
br i1 undef, label %CF, label %CF335
CF335: ; preds = %CF335, %CF
%Shuff48 = shufflevector <8 x i16> zeroinitializer, <8 x i16> zeroinitializer, <8 x i32> <i32 undef, i32 15, i32 undef, i32 3, i32 5, i32 7, i32 9, i32 11>
%B50 = sub <8 x i64> undef, zeroinitializer
%Se = sext i1 %Cmp22 to i64
%Cmp52 = icmp ule i64 %E40, 184653
br i1 %Cmp52, label %CF335, label %CF364
CF364: ; preds = %CF335
store i64 %E32, i64* %Sl37
%B57 = udiv <8 x i64> %I42, %B50
%L61 = load i64, i64* %Sl37
%Sl65 = select i1 undef, i1 %Cmp52, i1 true
br i1 %Sl65, label %CF, label %CF333
CF333: ; preds = %CF364
%Cmp66 = fcmp uge float 0x474A237E00000000, undef
br i1 %Cmp66, label %CF, label %CF324
CF324: ; preds = %CF358, %CF360, %CF333
%L67 = load i64, i64* %Sl37
%Sl73 = select i1 %E18, i8 %L, i8 %L31
%ZE = zext i1 true to i32
%Cmp81 = icmp ult i64 184653, %L46
br label %CF346
CF346: ; preds = %CF363, %CF346, %CF324
%L82 = load double, double* %Sl44
store i64 %Se, i64* %Sl37
br i1 undef, label %CF346, label %CF363
CF363: ; preds = %CF346
%I85 = insertelement <8 x i64> undef, i64 0, i32 4
%Se86 = sext i1 %Cmp81 to i64
%Cmp88 = icmp eq <16 x i1> zeroinitializer, undef
%Shuff91 = shufflevector <8 x i64> %B57, <8 x i64> %I42, <8 x i32> <i32 1, i32 undef, i32 5, i32 7, i32 undef, i32 11, i32 13, i32 undef>
%Sl95 = select i1 undef, i8 -1, i8 %5
store i8 %FC9, i8* %0
%Sl102 = select i1 %Sl65, float 0x3AAFABC380000000, float undef
%L104 = load i64, i64* %Sl37
store i8 %Sl95, i8* %0
br i1 undef, label %CF346, label %CF360
CF360: ; preds = %CF363
%I107 = insertelement <16 x i1> undef, i1 %Sl65, i32 3
%B108 = fdiv float undef, %Sl102
%FC109 = sitofp <16 x i1> %Shuff25 to <16 x float>
%Cmp111 = icmp slt i8 %Sl73, %Sl95
br i1 %Cmp111, label %CF324, label %CF344
CF344: ; preds = %CF344, %CF360
store i64 %4, i64* %Sl37
br i1 undef, label %CF344, label %CF358
CF358: ; preds = %CF344
%B116 = add i8 29, %5
%Sl118 = select i1 %Cmp81, <8 x i1> undef, <8 x i1> %Tr
%L120 = load i16, i16* undef
store i8 %FC9, i8* %0
%E121 = extractelement <16 x i1> %Shuff25, i32 3
br i1 %E121, label %CF324, label %CF325
CF325: ; preds = %CF362, %CF358
%I123 = insertelement <8 x i16> undef, i16 %L120, i32 0
%Sl125 = select i1 undef, i32 undef, i32 199785
%Cmp126 = icmp ule <16 x i1> undef, %Cmp88
br label %CF356
CF356: ; preds = %CF356, %CF325
%FC131 = sitofp <8 x i8> %B27 to <8 x double>
store i8 %Sl73, i8* %0
store i64 396197, i64* %Sl37
%L150 = load i64, i64* %Sl37
%Cmp157 = icmp ult i64 %L150, %L61
br i1 %Cmp157, label %CF356, label %CF359
CF359: ; preds = %CF359, %CF356
%B162 = srem <8 x i64> %I85, %Shuff13
%Tr163 = trunc i64 %Se to i8
%Sl164 = select i1 %Cmp52, i32* %A1, i32* %1
store i64 %E32, i64* undef
%I168 = insertelement <8 x i16> %I123, i16 undef, i32 5
%Se170 = sext i1 %Cmp81 to i32
%Cmp172 = icmp uge i8 %Sl73, %Sl73
br i1 %Cmp172, label %CF359, label %CF362
CF362: ; preds = %CF359
store i16 0, i16* undef
store i64 448097, i64* %Sl37
%E189 = extractelement <8 x i16> %Shuff48, i32 6
%Sl194 = select i1 %Cmp111, i8 29, i8 0
%Cmp195 = icmp eq i32 %ZE, %ZE
br i1 %Cmp195, label %CF325, label %CF326
CF326: ; preds = %CF342, %CF362
store i64 %L104, i64* undef
br label %CF342
CF342: ; preds = %CF326
%Cmp203 = icmp ule i1 %Cmp195, %E18
br i1 %Cmp203, label %CF326, label %CF337
CF337: ; preds = %CF342
br label %CF327
CF327: ; preds = %CF336, %CF355, %CF327, %CF337
store i64 %Se86, i64* undef
%Tr216 = trunc i64 184653 to i16
%Sl217 = select i1 %Cmp157, <4 x i1> undef, <4 x i1> undef
%Cmp218 = icmp slt i32 undef, %Se170
br i1 %Cmp218, label %CF327, label %CF355
CF355: ; preds = %CF327
%E220 = extractelement <16 x i1> %Cmp126, i32 3
br i1 %E220, label %CF327, label %CF340
CF340: ; preds = %CF355
%Sl224 = select i1 %Sl65, double undef, double 0xBE278346AB25A5C4
br label %CF334
CF334: ; preds = %CF343, %CF334, %CF340
%L226 = load i64, i64* undef
store i32 %3, i32* %Sl164
%Cmp233 = icmp uge i16 %Tr216, %L120
br i1 %Cmp233, label %CF334, label %CF354
CF354: ; preds = %CF334
store i64 %L226, i64* %Sl37
%Cmp240 = icmp uge i1 %Cmp52, undef
%Shuff243 = shufflevector <16 x i1> %I107, <16 x i1> undef, <16 x i32> <i32 28, i32 30, i32 undef, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14, i32 16, i32 18, i32 20, i32 22, i32 24, i32 undef>
%B245 = fmul <16 x float> %FC109, %FC109
br label %CF343
CF343: ; preds = %CF354
%Cmp248 = icmp sgt i8 0, %B116
br i1 %Cmp248, label %CF334, label %CF336
CF336: ; preds = %CF343
store i64 %E32, i64* undef
br i1 undef, label %CF327, label %CF328
CF328: ; preds = %CF345, %CF336
br label %CF345
CF345: ; preds = %CF328
%E257 = extractelement <4 x i1> %Sl217, i32 2
br i1 %E257, label %CF328, label %CF338
CF338: ; preds = %CF345
%Sl261 = select i1 %E121, <8 x i16> zeroinitializer, <8 x i16> undef
%Cmp262 = icmp sgt i8 undef, %Sl194
br label %CF329
CF329: ; preds = %CF339, %CF348, %CF357, %CF338
store i64 %L67, i64* %Sl37
br label %CF357
CF357: ; preds = %CF329
%Cmp275 = icmp ne i1 %Cmp203, %Sl65
br i1 %Cmp275, label %CF329, label %CF348
CF348: ; preds = %CF357
%Shuff286 = shufflevector <8 x i16> undef, <8 x i16> %Sl261, <8 x i32> <i32 6, i32 8, i32 10, i32 12, i32 undef, i32 0, i32 2, i32 4>
%Cmp291 = icmp ne i32 %Sl125, undef
br i1 %Cmp291, label %CF329, label %CF339
CF339: ; preds = %CF348
%Cmp299 = fcmp ugt double %L82, undef
br i1 %Cmp299, label %CF329, label %CF330
CF330: ; preds = %CF361, %CF330, %CF339
%E301 = extractelement <8 x double> %FC131, i32 3
store i64 %Sl16, i64* %Sl37
%Se313 = sext <8 x i1> %Sl118 to <8 x i32>
%Cmp315 = icmp sgt i8 %Tr163, %L
br i1 %Cmp315, label %CF330, label %CF361
CF361: ; preds = %CF330
store i16 %L120, i16* undef
%Shuff318 = shufflevector <8 x i64> %B162, <8 x i64> undef, <8 x i32> <i32 8, i32 10, i32 12, i32 14, i32 0, i32 2, i32 4, i32 6>
%ZE321 = zext i16 %E189 to i64
%Sl322 = select i1 %Cmp240, i1 %Cmp262, i1 %Cmp291
br i1 %Sl322, label %CF330, label %CF351
CF351: ; preds = %CF361
store double %Sl224, double* %Sl44
store i32 %ZE, i32* %Sl164
ret void
}