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bolt/deps/llvm-18.1.8/llvm/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll
Sam Vervaeck 174b6f4d4e
Embed LLVM 18.1.8
2025-02-14 19:21:04 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -loop-reduce -mtriple=x86_64-- -mcpu=core2 | FileCheck %s
declare i1 @check() nounwind
declare i1 @foo(ptr, ptr, ptr) nounwind
; Check that redundant phi elimination ran
define i32 @test(ptr %base) nounwind uwtable ssp {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY_LR_PH_I:%.*]]
; CHECK: while.body.lr.ph.i:
; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[BASE:%.*]], i64 16
; CHECK-NEXT: br label [[WHILE_BODY_I:%.*]]
; CHECK: while.body.i:
; CHECK-NEXT: [[INDVARS_IV7_I:%.*]] = phi i64 [ 16, [[WHILE_BODY_LR_PH_I]] ], [ [[INDVARS_IV_NEXT8_I:%.*]], [[COND_TRUE29_I:%.*]] ]
; CHECK-NEXT: [[I_05_I:%.*]] = phi i64 [ 0, [[WHILE_BODY_LR_PH_I]] ], [ [[INDVARS_IV7_I]], [[COND_TRUE29_I]] ]
; CHECK-NEXT: [[LSR4:%.*]] = trunc i64 [[I_05_I]] to i32
; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[LSR4]] to i64
; CHECK-NEXT: [[UGLYGEP1:%.*]] = getelementptr i8, ptr [[UGLYGEP]], i64 [[TMP0]]
; CHECK-NEXT: [[SEXT_I:%.*]] = shl i64 [[I_05_I]], 32
; CHECK-NEXT: [[IDX_EXT_I:%.*]] = ashr exact i64 [[SEXT_I]], 32
; CHECK-NEXT: [[ADD_PTR_SUM_I:%.*]] = add i64 [[IDX_EXT_I]], 16
; CHECK-NEXT: br label [[FOR_BODY_I:%.*]]
; CHECK: for.body.i:
; CHECK-NEXT: [[LSR_IV2:%.*]] = phi ptr [ [[UGLYGEP3:%.*]], [[FOR_BODY_I]] ], [ [[UGLYGEP1]], [[WHILE_BODY_I]] ]
; CHECK-NEXT: [[TMP1:%.*]] = load i8, ptr [[LSR_IV2]], align 1
; CHECK-NEXT: [[CMP:%.*]] = call i1 @check() #[[ATTR3:[0-9]+]]
; CHECK-NEXT: [[UGLYGEP3]] = getelementptr i8, ptr [[LSR_IV2]], i64 1
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_I:%.*]], label [[FOR_BODY_I]]
; CHECK: for.end.i:
; CHECK-NEXT: [[ADD_PTR_I144:%.*]] = getelementptr inbounds i8, ptr [[BASE]], i64 [[ADD_PTR_SUM_I]]
; CHECK-NEXT: [[CMP2:%.*]] = tail call i1 @foo(ptr [[ADD_PTR_I144]], ptr [[ADD_PTR_I144]], ptr undef) #[[ATTR3]]
; CHECK-NEXT: br i1 [[CMP2]], label [[COND_TRUE29_I]], label [[COND_FALSE35_I:%.*]]
; CHECK: cond.true29.i:
; CHECK-NEXT: [[INDVARS_IV_NEXT8_I]] = add i64 [[INDVARS_IV7_I]], 16
; CHECK-NEXT: br i1 false, label [[EXIT:%.*]], label [[WHILE_BODY_I]]
; CHECK: cond.false35.i:
; CHECK-NEXT: unreachable
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %while.body.lr.ph.i
while.body.lr.ph.i: ; preds = %cond.true.i
br label %while.body.i
while.body.i: ; preds = %cond.true29.i, %while.body.lr.ph.i
%indvars.iv7.i = phi i64 [ 16, %while.body.lr.ph.i ], [ %indvars.iv.next8.i, %cond.true29.i ]
%i.05.i = phi i64 [ 0, %while.body.lr.ph.i ], [ %indvars.iv7.i, %cond.true29.i ]
%sext.i = shl i64 %i.05.i, 32
%idx.ext.i = ashr exact i64 %sext.i, 32
%add.ptr.sum.i = add i64 %idx.ext.i, 16
br label %for.body.i
for.body.i: ; preds = %for.body.i, %while.body.i
%indvars.iv.i = phi i64 [ 0, %while.body.i ], [ %indvars.iv.next.i, %for.body.i ]
%add.ptr.sum = add i64 %add.ptr.sum.i, %indvars.iv.i
%arrayidx22.i = getelementptr inbounds i8, ptr %base, i64 %add.ptr.sum
%0 = load i8, ptr %arrayidx22.i, align 1
%indvars.iv.next.i = add i64 %indvars.iv.i, 1
%cmp = call i1 @check() nounwind
br i1 %cmp, label %for.end.i, label %for.body.i
for.end.i: ; preds = %for.body.i
%add.ptr.i144 = getelementptr inbounds i8, ptr %base, i64 %add.ptr.sum.i
%cmp2 = tail call i1 @foo(ptr %add.ptr.i144, ptr %add.ptr.i144, ptr undef) nounwind
br i1 %cmp2, label %cond.true29.i, label %cond.false35.i
cond.true29.i: ; preds = %for.end.i
%indvars.iv.next8.i = add i64 %indvars.iv7.i, 16
br i1 false, label %exit, label %while.body.i
cond.false35.i: ; preds = %for.end.i
unreachable
exit: ; preds = %cond.true29.i, %cond.true.i
ret i32 0
}
%struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771 = type { i32, i32, i32 }
@tags = external global [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], align 16
; PR11782: SCEVExpander assert
;
; Test phi reuse after LSR that requires SCEVExpander to hoist an
; interesting GEP.
;
define void @test2(i32 %n) nounwind uwtable {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 undef, label [[WHILE_END:%.*]], label [[FOR_COND468_PREHEADER:%.*]]
; CHECK: for.cond468.preheader:
; CHECK-NEXT: br label [[FOR_COND468:%.*]]
; CHECK: for.cond468:
; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32 [ 1, [[FOR_COND468_PREHEADER]] ], [ [[LSR_IV_NEXT:%.*]], [[IF_THEN477:%.*]] ]
; CHECK-NEXT: [[LSR_IV:%.*]] = phi ptr [ getelementptr inbounds ([5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 0, i32 2), [[FOR_COND468_PREHEADER]] ], [ [[UGLYGEP:%.*]], [[IF_THEN477]] ]
; CHECK-NEXT: [[K_0:%.*]] = load i32, ptr [[LSR_IV]], align 4
; CHECK-NEXT: [[CMP469:%.*]] = icmp slt i32 [[LSR_IV1]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP469]], label [[FOR_BODY471:%.*]], label [[FOR_INC498_PREHEADER:%.*]]
; CHECK: for.body471:
; CHECK-NEXT: [[UGLYGEP2:%.*]] = getelementptr i8, ptr [[LSR_IV]], i64 8
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[UGLYGEP2]], align 4
; CHECK-NEXT: br i1 false, label [[IF_THEN477]], label [[FOR_INC498_PREHEADER]]
; CHECK: for.inc498.preheader:
; CHECK-NEXT: br label [[FOR_INC498:%.*]]
; CHECK: if.then477:
; CHECK-NEXT: [[UGLYGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 12
; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV1]], 1
; CHECK-NEXT: br label [[FOR_COND468]]
; CHECK: for.inc498:
; CHECK-NEXT: br label [[FOR_INC498]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
br i1 undef, label %while.end, label %for.cond468
for.cond468: ; preds = %if.then477, %entry
%indvars.iv1163 = phi i64 [ %indvars.iv.next1164, %if.then477 ], [ 1, %entry ]
%k.0.in = phi ptr [ %last, %if.then477 ], [ getelementptr inbounds ([5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 0, i32 2), %entry ]
%k.0 = load i32, ptr %k.0.in, align 4
%0 = trunc i64 %indvars.iv1163 to i32
%cmp469 = icmp slt i32 %0, %n
br i1 %cmp469, label %for.body471, label %for.inc498
for.body471: ; preds = %for.cond468
%first = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 %indvars.iv1163, i32 1
%1 = load i32, ptr %first, align 4
br i1 undef, label %if.then477, label %for.inc498
if.then477: ; preds = %for.body471
%last = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 %indvars.iv1163, i32 2
%indvars.iv.next1164 = add i64 %indvars.iv1163, 1
br label %for.cond468
for.inc498: ; preds = %for.inc498, %for.body471, %for.cond468
br label %for.inc498
while.end: ; preds = %entry
ret void
}
; PR12898: SCEVExpander crash
; Test redundant phi elimination when the deleted phi's increment is
; itself a phi.
;
define fastcc void @test3(double* nocapture %u) nounwind uwtable ssp {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 undef, label [[MESHBB1_PREHEADER:%.*]], label [[MESHBB5:%.*]]
; CHECK: meshBB1.preheader:
; CHECK-NEXT: br label [[MESHBB1:%.*]]
; CHECK: for.inc8.us.i:
; CHECK-NEXT: br i1 true, label [[MESHBB1_LOOPEXIT:%.*]], label [[MESHBB:%.*]]
; CHECK: for.body3.us.i:
; CHECK-NEXT: [[INDVARS_IV_I_SV_PHI:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_I:%.*]], [[MESHBB]] ], [ 0, [[FOR_BODY3_LR_PH_US_I:%.*]] ]
; CHECK-NEXT: [[OPQ_SA_CALC12:%.*]] = sub i32 undef, 227
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[LSR_IV:%.*]], [[INDVARS_IV_I_SV_PHI]]
; CHECK-NEXT: [[TMP:%.*]] = trunc i64 [[TMP0]] to i32
; CHECK-NEXT: [[MUL_I_US_I:%.*]] = mul nsw i32 0, [[TMP]]
; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[INDVARS_IV_I_SV_PHI]], 3
; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[U:%.*]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP2:%.*]] = load double, ptr [[UGLYGEP]], align 8
; CHECK-NEXT: br i1 undef, label [[FOR_INC8_US_I:%.*]], label [[MESHBB]]
; CHECK: for.body3.lr.ph.us.i.loopexit:
; CHECK-NEXT: [[LSR_IV_NEXT:%.*]] = add i64 [[LSR_IV]], 1
; CHECK-NEXT: br label [[FOR_BODY3_LR_PH_US_I]]
; CHECK: for.body3.lr.ph.us.i:
; CHECK-NEXT: [[LSR_IV]] = phi i64 [ [[LSR_IV_NEXT]], [[FOR_BODY3_LR_PH_US_I_LOOPEXIT:%.*]] ], [ undef, [[MESHBB1]] ]
; CHECK-NEXT: [[ARRAYIDX_US_I:%.*]] = getelementptr inbounds double, ptr undef, i64 [[LSR_IV]]
; CHECK-NEXT: br label [[FOR_BODY3_US_I:%.*]]
; CHECK: for.inc8.us.i2:
; CHECK-NEXT: unreachable
; CHECK: eval_At_times_u.exit:
; CHECK-NEXT: ret void
; CHECK: meshBB:
; CHECK-NEXT: [[MESHSTACKVARIABLE_PHI:%.*]] = phi i32 [ [[OPQ_SA_CALC12]], [[FOR_BODY3_US_I]] ], [ undef, [[FOR_INC8_US_I]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT_I]] = add i64 [[INDVARS_IV_I_SV_PHI]], 1
; CHECK-NEXT: br i1 true, label [[FOR_BODY3_LR_PH_US_I_LOOPEXIT]], label [[FOR_BODY3_US_I]]
; CHECK: meshBB1.loopexit:
; CHECK-NEXT: br label [[MESHBB1]]
; CHECK: meshBB1:
; CHECK-NEXT: br label [[FOR_BODY3_LR_PH_US_I]]
; CHECK: meshBB5:
; CHECK-NEXT: br i1 undef, label [[EVAL_AT_TIMES_U_EXIT:%.*]], label [[FOR_INC8_US_I2:%.*]]
;
entry:
br i1 undef, label %meshBB1, label %meshBB5
for.inc8.us.i: ; preds = %for.body3.us.i
br i1 undef, label %meshBB1, label %meshBB
for.body3.us.i: ; preds = %meshBB, %for.body3.lr.ph.us.i
%indvars.iv.i.SV.phi = phi i64 [ %indvars.iv.next.i, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
%storemerge13.us.i.SV.phi = phi i32 [ 0, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
%Opq.sa.calc12 = sub i32 undef, 227
%0 = add nsw i64 %indvars.iv.i.SV.phi, %indvars.iv8.i.SV.phi26
%1 = trunc i64 %0 to i32
%mul.i.us.i = mul nsw i32 0, %1
%arrayidx5.us.i = getelementptr inbounds double, ptr %u, i64 %indvars.iv.i.SV.phi
%2 = load double, ptr %arrayidx5.us.i, align 8
%indvars.iv.next.i = add i64 %indvars.iv.i.SV.phi, 1
br i1 undef, label %for.inc8.us.i, label %meshBB
for.body3.lr.ph.us.i: ; preds = %meshBB1, %meshBB
%indvars.iv8.i.SV.phi26 = phi i64 [ undef, %meshBB1 ], [ %indvars.iv8.i.SV.phi24, %meshBB ]
%arrayidx.us.i = getelementptr inbounds double, ptr undef, i64 %indvars.iv8.i.SV.phi26
%3 = add i64 %indvars.iv8.i.SV.phi26, 1
br label %for.body3.us.i
for.inc8.us.i2: ; preds = %meshBB5
unreachable
eval_At_times_u.exit: ; preds = %meshBB5
ret void
meshBB: ; preds = %for.body3.us.i, %for.inc8.us.i
%indvars.iv8.i.SV.phi24 = phi i64 [ undef, %for.body3.us.i ], [ %3, %for.inc8.us.i ]
%meshStackVariable.phi = phi i32 [ %Opq.sa.calc12, %for.body3.us.i ], [ undef, %for.inc8.us.i ]
br i1 undef, label %for.body3.lr.ph.us.i, label %for.body3.us.i
meshBB1: ; preds = %for.inc8.us.i, %entry
br label %for.body3.lr.ph.us.i
meshBB5: ; preds = %entry
br i1 undef, label %eval_At_times_u.exit, label %for.inc8.us.i2
}
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