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clang-p2996/llvm/test/Transforms/IndVarSimplify/scev-expander-preserve-lcssa.ll
Arthur Eubanks 512a64de6a [test] Fix scev-expander-preserve-lcssa.ll under NPM 
The NPM runs loop passes over loops in forward program order, rather
than the legacy loop PM's reverse program order. This seems to produce
better results as shown here.

I verified that changing the loop order to reverse program order results
in the same IR with the NPM.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D92817
2020-12-10 09:46:08 -08:00

585 lines
25 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -aa-pipeline=basic-aa -passes=indvars,indvars -S -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: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[IF_END106:%.*]], label [[RETURN_LOOPEXIT:%.*]]
; CHECK: if.end106:
; CHECK-NEXT: br i1 false, 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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