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llvm-project/llvm/test/Transforms/IndVarSimplify/scev-expander-preserve-lcss...

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -indvars -S -indvars -verify-loop-lcssa %s | FileCheck %s
; Make sure SCEVExpander does not crash and introduce unnecessary LCSSA PHI nodes.
; The tests are a collection of cases with crashes when preserving LCSSA PHI
; nodes directly in SCEVExpander.
declare i1 @cond() readnone
define void @test1(i8 %x, [512 x i8]* %ptr) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LAND_LHS_TRUE:%.*]]
; CHECK: land.lhs.true:
; CHECK-NEXT: br label [[WHILE_COND22:%.*]]
; CHECK: while.cond22:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[WHILE_COND22]], label [[WHILE_COND29_PREHEADER:%.*]]
; CHECK: while.cond29.preheader:
; CHECK-NEXT: br label [[WHILE_BODY35:%.*]]
; CHECK: while.body35:
; CHECK-NEXT: [[I_1107:%.*]] = phi i32 [ [[I_9:%.*]], [[IF_END224:%.*]] ], [ 0, [[WHILE_COND29_PREHEADER]] ]
; CHECK-NEXT: br label [[WHILE_COND192:%.*]]
; CHECK: while.cond192:
; CHECK-NEXT: switch i8 [[X:%.*]], label [[WHILE_BODY205:%.*]] [
; CHECK-NEXT: i8 59, label [[WHILE_COND215_PREHEADER:%.*]]
; CHECK-NEXT: i8 10, label [[IF_END224_LOOPEXIT1:%.*]]
; CHECK-NEXT: ]
; CHECK: while.cond215.preheader:
; CHECK-NEXT: br label [[WHILE_COND215:%.*]]
; CHECK: while.body205:
; CHECK-NEXT: br label [[WHILE_COND192]]
; CHECK: while.cond215:
; CHECK-NEXT: [[I_8_IN:%.*]] = phi i32 [ [[I_8:%.*]], [[WHILE_COND215]] ], [ [[I_1107]], [[WHILE_COND215_PREHEADER]] ]
; CHECK-NEXT: [[I_8]] = add nsw i32 [[I_8_IN]], 1
; CHECK-NEXT: [[IDXPROM216:%.*]] = sext i32 [[I_8]] to i64
; CHECK-NEXT: [[ARRAYIDX217:%.*]] = getelementptr inbounds [512 x i8], [512 x i8]* [[PTR:%.*]], i64 0, i64 [[IDXPROM216]]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[WHILE_COND215]], label [[IF_END224_LOOPEXIT:%.*]]
; CHECK: if.end224.loopexit:
; CHECK-NEXT: [[I_8_LCSSA:%.*]] = phi i32 [ [[I_8]], [[WHILE_COND215]] ]
; CHECK-NEXT: br label [[IF_END224]]
; CHECK: if.end224.loopexit1:
; CHECK-NEXT: br label [[IF_END224]]
; CHECK: if.end224:
; CHECK-NEXT: [[I_9]] = phi i32 [ [[I_8_LCSSA]], [[IF_END224_LOOPEXIT]] ], [ [[I_1107]], [[IF_END224_LOOPEXIT1]] ]
; CHECK-NEXT: [[C_3:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_3]], label [[WHILE_END225:%.*]], label [[WHILE_BODY35]]
; CHECK: while.end225:
; CHECK-NEXT: br label [[LAND_LHS_TRUE]]
;
entry:
br label %land.lhs.true
land.lhs.true: ; preds = %while.end225, %entry
br label %while.cond22
while.cond22: ; preds = %while.cond22, %land.lhs.true
%c.1 = call i1 @cond()
br i1 %c.1, label %while.cond22, label %while.cond29.preheader
while.cond29.preheader: ; preds = %while.cond22
br label %while.body35
while.body35: ; preds = %if.end224, %while.cond29.preheader
%i.1107 = phi i32 [ %i.9, %if.end224 ], [ 0, %while.cond29.preheader ]
br label %while.cond192
while.cond192: ; preds = %while.body205, %while.body35
%i.7 = phi i32 [ %i.1107, %while.body35 ], [ %inc206, %while.body205 ]
switch i8 %x, label %while.body205 [
i8 59, label %while.cond215
i8 10, label %if.end224
]
while.body205: ; preds = %while.cond192
%inc206 = add nsw i32 %i.7, 1
br label %while.cond192
while.cond215: ; preds = %while.cond215, %while.cond192
%i.8.in = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%i.8 = add nsw i32 %i.8.in, 1
%idxprom216 = sext i32 %i.8 to i64
%arrayidx217 = getelementptr inbounds [512 x i8], [512 x i8]* %ptr, i64 0, i64 %idxprom216
%c.2 = call i1 @cond()
br i1 %c.2, label %while.cond215, label %if.end224
if.end224: ; preds = %while.cond215, %while.cond192
%i.9 = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%c.3 = call i1 @cond()
br i1 %c.3, label %while.end225, label %while.body35
while.end225: ; preds = %if.end224
br label %land.lhs.true
}
define void @test2(i16 %x) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[FOR_COND_PREHEADER:%.*]], label [[RETURN:%.*]]
; CHECK: for.cond.preheader:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: switch i16 [[X:%.*]], label [[RETURN_LOOPEXIT1:%.*]] [
; CHECK-NEXT: i16 41, label [[FOR_END:%.*]]
; CHECK-NEXT: i16 43, label [[FOR_COND]]
; CHECK-NEXT: ]
; CHECK: for.end:
; CHECK-NEXT: [[I_0_LCSSA2:%.*]] = phi i32 [ 0, [[FOR_COND]] ]
; CHECK-NEXT: [[CMP8243:%.*]] = icmp sgt i32 [[I_0_LCSSA2]], 0
; CHECK-NEXT: br i1 [[CMP8243]], label [[FOR_BODY84_PREHEADER:%.*]], label [[RETURN]]
; CHECK: for.body84.preheader:
; CHECK-NEXT: br label [[FOR_BODY84:%.*]]
; CHECK: for.body84:
; CHECK-NEXT: [[I_144:%.*]] = phi i32 [ [[INC:%.*]], [[IF_END106:%.*]] ], [ 0, [[FOR_BODY84_PREHEADER]] ]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[IF_END106]], label [[RETURN_LOOPEXIT:%.*]]
; CHECK: if.end106:
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_144]], 1
; CHECK-NEXT: [[CMP82:%.*]] = icmp slt i32 [[INC]], [[I_0_LCSSA2]]
; CHECK-NEXT: br i1 [[CMP82]], label [[FOR_BODY84]], label [[RETURN_LOOPEXIT]]
; CHECK: return.loopexit:
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return.loopexit1:
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: ret void
;
entry:
%c.1 = call i1 @cond()
br i1 %c.1, label %for.cond, label %return
for.cond: ; preds = %for.cond, %entry
%i.0 = phi i32 [ %sub, %for.cond ], [ 0, %entry ]
%sub = add nsw i32 %i.0, -1
switch i16 %x, label %return [
i16 41, label %for.end
i16 43, label %for.cond
]
for.end: ; preds = %for.cond
%cmp8243 = icmp sgt i32 %i.0, 0
br i1 %cmp8243, label %for.body84, label %return
for.body84: ; preds = %if.end106, %for.end
%i.144 = phi i32 [ %inc, %if.end106 ], [ 0, %for.end ]
%c.2 = call i1 @cond()
br i1 %c.2, label %if.end106, label %return
if.end106: ; preds = %for.body84
%inc = add nuw nsw i32 %i.144, 1
%cmp82 = icmp slt i32 %inc, %i.0
br i1 %cmp82, label %for.body84, label %return
return: ; preds = %if.end106, %for.body84, %for.end, %for.cond, %entry
ret void
}
declare i32 @get.i32() readnone
define void @test3(i32* %ptr) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[M_0804:%.*]] = phi i32 [ 1, [[WHILE_BODY]] ], [ [[INC1499:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[V:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 [[V]], 0
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[M_0804_LCSSA:%.*]] = phi i32 [ [[M_0804]], [[FOR_BODY1208]] ]
; CHECK-NEXT: br label [[FOR_COND1390:%.*]]
; CHECK: for.cond1390:
; CHECK-NEXT: [[M_2_IN:%.*]] = phi i32 [ [[M_0804_LCSSA]], [[IF_THEN1360]] ], [ 0, [[FOR_BODY1394:%.*]] ]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[FOR_BODY1394]], label [[FOR_END1469:%.*]]
; CHECK: for.body1394:
; CHECK-NEXT: br label [[FOR_COND1390]]
; CHECK: for.end1469:
; CHECK-NEXT: [[M_2_IN_LCSSA:%.*]] = phi i32 [ [[M_2_IN]], [[FOR_COND1390]] ]
; CHECK-NEXT: store i32 [[M_2_IN_LCSSA]], i32* [[PTR:%.*]], align 4
; CHECK-NEXT: br label [[WHILE_BODY]]
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_0804]], 1
; CHECK-NEXT: br label [[FOR_BODY1208]]
;
entry:
br label %while.body
while.body: ; preds = %for.end1469, %entry
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %while.body
%m.0804 = phi i32 [ 1, %while.body ], [ %inc1499, %for.inc1498 ]
%v = call i32 @get.i32()
%cmp1358 = icmp eq i32 %v, 0
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %for.body1208
br label %for.cond1390
for.cond1390: ; preds = %for.body1394, %if.then1360
%m.2.in = phi i32 [ %m.0804, %if.then1360 ], [ 0, %for.body1394 ]
%c.2 = call i1 @cond()
br i1 %c.2, label %for.body1394, label %for.end1469
for.body1394: ; preds = %for.cond1390
br label %for.cond1390
for.end1469: ; preds = %for.cond1390
store i32 %m.2.in, i32* %ptr, align 4
br label %while.body
for.inc1498: ; preds = %for.body1208
%inc1499 = add nuw nsw i32 %m.0804, 1
br label %for.body1208
}
define void @test4(i32* %ptr) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_COND1204_PREHEADER:%.*]]
; CHECK: for.cond1204.preheader:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[IF_THEN1504:%.*]], label [[FOR_BODY1208_LR_PH:%.*]]
; CHECK: for.body1208.lr.ph:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 0, [[FOR_BODY1208_LR_PH]] ], [ [[TMP1:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[M_0804:%.*]] = phi i32 [ 1, [[FOR_BODY1208_LR_PH]] ], [ [[INC1499:%.*]], [[FOR_INC1498]] ]
; CHECK-NEXT: [[IDXPROM1212:%.*]] = zext i32 [[M_0804]] to i64
; CHECK-NEXT: [[V:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1215:%.*]] = icmp eq i32 0, [[V]]
; CHECK-NEXT: [[YPOS1223:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 [[IDXPROM1212]]
; CHECK-NEXT: br i1 [[CMP1215]], label [[IF_THEN1217:%.*]], label [[IF_ELSE1351:%.*]]
; CHECK: if.then1217:
; CHECK-NEXT: [[M_0804_LCSSA:%.*]] = phi i32 [ [[M_0804]], [[FOR_BODY1208]] ]
; CHECK-NEXT: br label [[FOR_COND1247:%.*]]
; CHECK: for.cond1247:
; CHECK-NEXT: [[M_1_IN:%.*]] = phi i32 [ [[M_0804_LCSSA]], [[IF_THEN1217]] ], [ [[M_1:%.*]], [[IF_THEN1260:%.*]] ]
; CHECK-NEXT: [[M_1]] = add nuw nsw i32 [[M_1_IN]], 1
; CHECK-NEXT: br label [[FOR_BODY1251:%.*]]
; CHECK: for.body1251:
; CHECK-NEXT: [[IDXPROM1255:%.*]] = zext i32 [[M_1]] to i64
; CHECK-NEXT: [[XPOS1257:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i64 [[IDXPROM1255]]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[IF_THEN1260]], label [[FOR_END1326:%.*]]
; CHECK: if.then1260:
; CHECK-NEXT: br label [[FOR_COND1247]]
; CHECK: for.end1326:
; CHECK-NEXT: br label [[IF_END1824:%.*]]
; CHECK: if.else1351:
; CHECK-NEXT: [[V_2:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 [[V_2]], 0
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[DOTLCSSA2:%.*]] = phi i32 [ [[TMP0]], [[IF_ELSE1351]] ]
; CHECK-NEXT: [[M_0804_LCSSA1:%.*]] = phi i32 [ [[M_0804]], [[IF_ELSE1351]] ]
; CHECK-NEXT: [[CMP1392:%.*]] = icmp slt i32 [[M_0804_LCSSA1]], [[DOTLCSSA2]]
; CHECK-NEXT: unreachable
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_0804]], 1
; CHECK-NEXT: [[TMP1]] = load i32, i32* [[PTR]], align 8
; CHECK-NEXT: br label [[FOR_BODY1208]]
; CHECK: if.then1504:
; CHECK-NEXT: unreachable
; CHECK: if.end1824:
; CHECK-NEXT: br label [[WHILE_BODY]]
;
entry:
br label %while.body
while.body: ; preds = %if.end1824, %entry
br label %for.cond1204.preheader
for.cond1204.preheader: ; preds = %while.body
%c.1 = call i1 @cond()
br i1 %c.1, label %if.then1504, label %for.body1208.lr.ph
for.body1208.lr.ph: ; preds = %for.cond1204.preheader
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %for.body1208.lr.ph
%0 = phi i32 [ 0, %for.body1208.lr.ph ], [ %1, %for.inc1498 ]
%m.0804 = phi i32 [ 1, %for.body1208.lr.ph ], [ %inc1499, %for.inc1498 ]
%idxprom1212 = zext i32 %m.0804 to i64
%v = call i32 @get.i32()
%cmp1215 = icmp eq i32 0, %v
%ypos1223 = getelementptr inbounds i32, i32* %ptr , i64 %idxprom1212
br i1 %cmp1215, label %if.then1217, label %if.else1351
if.then1217: ; preds = %for.body1208
br label %for.cond1247
for.cond1247: ; preds = %if.then1260, %if.then1217
%m.1.in = phi i32 [ %m.0804, %if.then1217 ], [ %m.1, %if.then1260 ]
%m.1 = add nuw nsw i32 %m.1.in, 1
%cmp1249 = icmp slt i32 %m.1.in, %0
br label %for.body1251
for.body1251: ; preds = %for.cond1247
%idxprom1255 = zext i32 %m.1 to i64
%xpos1257 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1255
%c.2 = call i1 @cond()
br i1 %c.2, label %if.then1260, label %for.end1326
if.then1260: ; preds = %for.body1251
br label %for.cond1247
for.end1326: ; preds = %for.body1251
br label %if.end1824
if.else1351: ; preds = %for.body1208
%v.2 = call i32 @get.i32()
%cmp1358 = icmp eq i32 %v.2, 0
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %if.else1351
%cmp1392 = icmp slt i32 %m.0804, %0
unreachable
for.inc1498: ; preds = %if.else1351
%inc1499 = add nuw nsw i32 %m.0804, 1
%1 = load i32, i32* %ptr, align 8
br label %for.body1208
if.then1504: ; preds = %for.cond1204.preheader
unreachable
if.end1824: ; preds = %for.end1326
br label %while.body
}
define void @test5(i8* %header, i32 %conv, i8 %n) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[POS_42:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD85:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: br label [[FOR_INNER:%.*]]
; CHECK: for.inner:
; CHECK-NEXT: [[I_0_I:%.*]] = phi i32 [ 0, [[FOR_BODY]] ], [ [[INC_I:%.*]], [[FOR_INNER]] ]
; CHECK-NEXT: [[INC_I]] = add nuw nsw i32 [[I_0_I]], 1
; CHECK-NEXT: [[CMP7_I:%.*]] = icmp slt i8 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP7_I]], label [[FOR_INNER]], label [[FOR_INNER_EXIT:%.*]]
; CHECK: for.inner.exit:
; CHECK-NEXT: [[INC_I_LCSSA:%.*]] = phi i32 [ [[INC_I]], [[FOR_INNER]] ]
; CHECK-NEXT: br label [[FOR_INNER_2:%.*]]
; CHECK: for.inner.2:
; CHECK-NEXT: [[I_0_I1:%.*]] = phi i32 [ 0, [[FOR_INNER_EXIT]] ], [ [[INC_I3:%.*]], [[FOR_INNER_2]] ]
; CHECK-NEXT: [[INC_I3]] = add nuw nsw i32 [[I_0_I1]], 1
; CHECK-NEXT: [[CMP7_I4:%.*]] = icmp slt i8 [[N]], 0
; CHECK-NEXT: br i1 [[CMP7_I4]], label [[FOR_INNER_2]], label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[INC_I3_LCSSA:%.*]] = phi i32 [ [[INC_I3]], [[FOR_INNER_2]] ]
; CHECK-NEXT: [[ADD71:%.*]] = add i32 [[POS_42]], [[INC_I_LCSSA]]
; CHECK-NEXT: [[ADD85]] = add i32 [[ADD71]], [[INC_I3_LCSSA]]
; CHECK-NEXT: br i1 false, label [[FOR_BODY]], label [[WHILE_COND_PREHEADER:%.*]]
; CHECK: while.cond.preheader:
; CHECK-NEXT: [[ADD85_LCSSA:%.*]] = phi i32 [ [[ADD85]], [[FOR_INC]] ]
; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[CONV:%.*]], 2
; CHECK-NEXT: br label [[WHILE_COND:%.*]]
; CHECK: while.cond:
; CHECK-NEXT: [[POS_8:%.*]] = phi i32 [ [[INC114:%.*]], [[WHILE_BODY:%.*]] ], [ [[ADD85_LCSSA]], [[WHILE_COND_PREHEADER]] ]
; CHECK-NEXT: [[CMP112:%.*]] = icmp ult i32 [[POS_8]], [[SHL]]
; CHECK-NEXT: br i1 [[CMP112]], label [[WHILE_BODY]], label [[CLEANUP122:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[INC114]] = add nuw i32 [[POS_8]], 1
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[WHILE_COND]], label [[CLEANUP122]]
; CHECK: cleanup122:
; CHECK-NEXT: ret void
;
entry:
%shl = shl nuw nsw i32 %conv, 2
br label %for.body
for.body: ; preds = %entry, %for.inc
%pos.42 = phi i32 [ 0, %entry ], [ %add85, %for.inc ]
br label %for.inner
for.inner: ; preds = %for.body.i, %for.body
%i.0.i = phi i32 [ 0, %for.body ], [ %inc.i, %for.inner ]
%inc.i = add nuw nsw i32 %i.0.i, 1
%cmp7.i = icmp slt i8 %n, 0
br i1 %cmp7.i, label %for.inner, label %for.inner.exit
for.inner.exit: ; preds = %for.body.i
%add71 = add i32 %pos.42, %inc.i
br label %for.inner.2
for.inner.2: ; preds = %for.body.i6, %cleanup.cont74
%i.0.i1 = phi i32 [ 0, %for.inner.exit ], [ %inc.i3, %for.inner.2]
%inc.i3 = add nuw nsw i32 %i.0.i1, 1
%cmp7.i4 = icmp slt i8 %n, 0
br i1 %cmp7.i4, label %for.inner.2, label %for.inc
for.inc: ; preds = %for.body.i6
%add85 = add i32 %add71, %inc.i3
br i1 false, label %for.body, label %while.cond.preheader
while.cond.preheader: ; preds = %for.inc
br label %while.cond
while.cond: ; preds = %while.cond.preheader, %while.body
%pos.8 = phi i32 [ %inc114, %while.body ], [ %add85, %while.cond.preheader ]
%cmp112 = icmp ult i32 %pos.8, %shl
br i1 %cmp112, label %while.body, label %cleanup122
while.body: ; preds = %while.cond
%inc114 = add nuw i32 %pos.8, 1
%c.1 = call i1 @cond()
br i1 %c.1, label %while.cond, label %cleanup122
cleanup122: ; preds = %while.body, %while.cond
ret void
}
define void @test6(i8 %x) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[LAND_RHS:%.*]], label [[WHILE_END316:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: br label [[WHILE_BODY35:%.*]]
; CHECK: while.body35:
; CHECK-NEXT: br label [[WHILE_COND192:%.*]]
; CHECK: while.cond192:
; CHECK-NEXT: switch i8 [[X:%.*]], label [[WHILE_BODY205:%.*]] [
; CHECK-NEXT: i8 59, label [[WHILE_COND215_PREHEADER:%.*]]
; CHECK-NEXT: i8 10, label [[IF_END224:%.*]]
; CHECK-NEXT: ]
; CHECK: while.cond215.preheader:
; CHECK-NEXT: [[I_7_LCSSA:%.*]] = phi i32 [ 0, [[WHILE_COND192]] ]
; CHECK-NEXT: br label [[WHILE_COND215:%.*]]
; CHECK: while.body205:
; CHECK-NEXT: br label [[WHILE_COND192]]
; CHECK: while.cond215:
; CHECK-NEXT: [[I_8_IN:%.*]] = phi i32 [ [[I_8:%.*]], [[WHILE_COND215]] ], [ [[I_7_LCSSA]], [[WHILE_COND215_PREHEADER]] ]
; CHECK-NEXT: [[I_8]] = add nuw nsw i32 [[I_8_IN]], 1
; CHECK-NEXT: [[IDXPROM216:%.*]] = sext i32 [[I_8]] to i64
; CHECK-NEXT: [[ARRAYIDX217:%.*]] = getelementptr inbounds [512 x i8], [512 x i8]* null, i64 0, i64 [[IDXPROM216]]
; CHECK-NEXT: br label [[WHILE_COND215]]
; CHECK: if.end224:
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[WHILE_END225:%.*]], label [[WHILE_BODY35]]
; CHECK: while.end225:
; CHECK-NEXT: unreachable
; CHECK: while.end316:
; CHECK-NEXT: ret void
;
entry:
%c.1 = call i1 @cond()
br i1 %c.1, label %land.rhs, label %while.end316
land.rhs: ; preds = %entry
br label %while.body35
while.body35: ; preds = %if.end224, %land.rhs
br label %while.cond192
while.cond192: ; preds = %while.body205, %while.body35
%i.7 = phi i32 [ 0, %while.body35 ], [ %inc206, %while.body205 ]
switch i8 %x, label %while.body205 [
i8 59, label %while.cond215
i8 10, label %if.end224
]
while.body205: ; preds = %while.cond192
%inc206 = add nsw i32 %i.7, 1
br label %while.cond192
while.cond215: ; preds = %while.cond215, %while.cond192
%i.8.in = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%i.8 = add nsw i32 %i.8.in, 1
%idxprom216 = sext i32 %i.8 to i64
%arrayidx217 = getelementptr inbounds [512 x i8], [512 x i8]* null, i64 0, i64 %idxprom216
br label %while.cond215
if.end224: ; preds = %while.cond192
%c.2 = call i1 @cond()
br i1 %c.2, label %while.end225, label %while.body35
while.end225: ; preds = %if.end224
unreachable
while.end316: ; preds = %entry
ret void
}
define void @test7(i32* %ptr) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ undef, [[WHILE_BODY]] ], [ [[TMP1:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[M_048:%.*]] = phi i32 [ 1, [[WHILE_BODY]] ], [ [[INC1499:%.*]], [[FOR_INC1498]] ]
; CHECK-NEXT: [[IDXPROM1212:%.*]] = zext i32 [[M_048]] to i64
; CHECK-NEXT: [[XPOS1214:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 [[IDXPROM1212]]
; CHECK-NEXT: [[V_1:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1215:%.*]] = icmp eq i32 0, [[V_1]]
; CHECK-NEXT: br i1 [[CMP1215]], label [[IF_THEN1217:%.*]], label [[IF_ELSE1351:%.*]]
; CHECK: if.then1217:
; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP0]], [[FOR_BODY1208]] ]
; CHECK-NEXT: [[M_048_LCSSA:%.*]] = phi i32 [ [[M_048]], [[FOR_BODY1208]] ]
; CHECK-NEXT: [[CMP1249_NOT_NOT:%.*]] = icmp slt i32 [[M_048_LCSSA]], [[DOTLCSSA]]
; CHECK-NEXT: unreachable
; CHECK: if.else1351:
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 0, undef
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[M_048_LCSSA1:%.*]] = phi i32 [ [[M_048]], [[IF_ELSE1351]] ]
; CHECK-NEXT: br label [[FOR_COND1390:%.*]]
; CHECK: for.cond1390:
; CHECK-NEXT: [[M_2_IN:%.*]] = phi i32 [ [[M_048_LCSSA1]], [[IF_THEN1360]] ], [ [[M_2:%.*]], [[IF_THEN1403:%.*]] ]
; CHECK-NEXT: [[M_2]] = add nuw nsw i32 [[M_2_IN]], 1
; CHECK-NEXT: [[IDXPROM1398:%.*]] = zext i32 [[M_2]] to i64
; CHECK-NEXT: br label [[IF_THEN1403]]
; CHECK: if.then1403:
; CHECK-NEXT: [[XPOS1409:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i64 [[IDXPROM1398]]
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[FOR_COND1390]], label [[FOR_END1469:%.*]]
; CHECK: for.end1469:
; CHECK-NEXT: br label [[IF_END1824:%.*]]
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_048]], 1
; CHECK-NEXT: [[TMP1]] = load i32, i32* undef, align 8
; CHECK-NEXT: br label [[FOR_BODY1208]]
; CHECK: if.end1824:
; CHECK-NEXT: br label [[WHILE_BODY]]
;
entry:
br label %while.body
while.body: ; preds = %if.end1824, %entry
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %while.body
%0 = phi i32 [ undef, %while.body ], [ %1, %for.inc1498 ]
%m.048 = phi i32 [ 1, %while.body ], [ %inc1499, %for.inc1498 ]
%idxprom1212 = zext i32 %m.048 to i64
%xpos1214 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1212
%v.1 = call i32 @get.i32()
%cmp1215 = icmp eq i32 0, %v.1
br i1 %cmp1215, label %if.then1217, label %if.else1351
if.then1217: ; preds = %for.body1208
%cmp1249.not.not = icmp slt i32 %m.048, %0
unreachable
if.else1351: ; preds = %for.body1208
%cmp1358 = icmp eq i32 0, undef
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %if.else1351
br label %for.cond1390
for.cond1390: ; preds = %if.then1403, %if.then1360
%m.2.in = phi i32 [ %m.048, %if.then1360 ], [ %m.2, %if.then1403 ]
%m.2 = add nuw nsw i32 %m.2.in, 1
%cmp1392.not.not = icmp slt i32 %m.2.in, %0
%idxprom1398 = zext i32 %m.2 to i64
br label %if.then1403
if.then1403: ; preds = %for.cond1390
%xpos1409 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1398
%c.1 = call i1 @cond()
br i1 %c.1, label %for.cond1390, label %for.end1469
for.end1469: ; preds = %if.then1403
br label %if.end1824
for.inc1498: ; preds = %if.else1351
%inc1499 = add nuw nsw i32 %m.048, 1
%1 = load i32, i32* undef, align 8
br label %for.body1208
if.end1824: ; preds = %for.end1469
br label %while.body
}
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