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148 lines
6.6 KiB
LLVM
148 lines
6.6 KiB
LLVM
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; RUN: llc < %s -O3 -march=x86-64 -mcpu=core2 | FileCheck %s
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declare i1 @check() nounwind
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declare i1 @foo(i8*, i8*, i8*) nounwind
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; Check that redundant phi elimination ran
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; CHECK: @test
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; CHECK: %while.body.i
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; CHECK: movs
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; CHECK-NOT: movs
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; CHECK: %for.end.i
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define i32 @test(i8* %base) nounwind uwtable ssp {
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entry:
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br label %while.body.lr.ph.i
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while.body.lr.ph.i: ; preds = %cond.true.i
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br label %while.body.i
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while.body.i: ; preds = %cond.true29.i, %while.body.lr.ph.i
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%indvars.iv7.i = phi i64 [ 16, %while.body.lr.ph.i ], [ %indvars.iv.next8.i, %cond.true29.i ]
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%i.05.i = phi i64 [ 0, %while.body.lr.ph.i ], [ %indvars.iv7.i, %cond.true29.i ]
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%sext.i = shl i64 %i.05.i, 32
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%idx.ext.i = ashr exact i64 %sext.i, 32
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%add.ptr.sum.i = add i64 %idx.ext.i, 16
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br label %for.body.i
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for.body.i: ; preds = %for.body.i, %while.body.i
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%indvars.iv.i = phi i64 [ 0, %while.body.i ], [ %indvars.iv.next.i, %for.body.i ]
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%add.ptr.sum = add i64 %add.ptr.sum.i, %indvars.iv.i
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%arrayidx22.i = getelementptr inbounds i8, i8* %base, i64 %add.ptr.sum
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%0 = load i8, i8* %arrayidx22.i, align 1
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%indvars.iv.next.i = add i64 %indvars.iv.i, 1
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%cmp = call i1 @check() nounwind
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br i1 %cmp, label %for.end.i, label %for.body.i
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for.end.i: ; preds = %for.body.i
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%add.ptr.i144 = getelementptr inbounds i8, i8* %base, i64 %add.ptr.sum.i
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%cmp2 = tail call i1 @foo(i8* %add.ptr.i144, i8* %add.ptr.i144, i8* undef) nounwind
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br i1 %cmp2, label %cond.true29.i, label %cond.false35.i
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cond.true29.i: ; preds = %for.end.i
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%indvars.iv.next8.i = add i64 %indvars.iv7.i, 16
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br i1 false, label %exit, label %while.body.i
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cond.false35.i: ; preds = %for.end.i
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unreachable
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exit: ; preds = %cond.true29.i, %cond.true.i
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ret i32 0
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}
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%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 }
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@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
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; PR11782: SCEVExpander assert
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;
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; Test phi reuse after LSR that requires SCEVExpander to hoist an
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; interesting GEP.
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;
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; CHECK: @test2
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; CHECK: %entry
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; CHECK-NOT: mov
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; CHECK: je
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define void @test2(i32 %n) nounwind uwtable {
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entry:
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br i1 undef, label %while.end, label %for.cond468
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for.cond468: ; preds = %if.then477, %entry
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%indvars.iv1163 = phi i64 [ %indvars.iv.next1164, %if.then477 ], [ 1, %entry ]
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%k.0.in = phi i32* [ %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], [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]* @tags, i64 0, i64 0, i32 2), %entry ]
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%k.0 = load i32, i32* %k.0.in, align 4
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%0 = trunc i64 %indvars.iv1163 to i32
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%cmp469 = icmp slt i32 %0, %n
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br i1 %cmp469, label %for.body471, label %for.inc498
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for.body471: ; preds = %for.cond468
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%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], [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]* @tags, i64 0, i64 %indvars.iv1163, i32 1
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%1 = load i32, i32* %first, align 4
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br i1 undef, label %if.then477, label %for.inc498
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if.then477: ; preds = %for.body471
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%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], [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]* @tags, i64 0, i64 %indvars.iv1163, i32 2
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%indvars.iv.next1164 = add i64 %indvars.iv1163, 1
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br label %for.cond468
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for.inc498: ; preds = %for.inc498, %for.body471, %for.cond468
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br label %for.inc498
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while.end: ; preds = %entry
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ret void
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}
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; PR12898: SCEVExpander crash
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; Test redundant phi elimination when the deleted phi's increment is
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; itself a phi.
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;
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; CHECK: @test3
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; CHECK: %for.body3.lr.ph.us.i.loopexit
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; CHECK-NEXT: Parent Loop
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; CHECK-NEXT: Inner Loop
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; CHECK-NEXT: incq
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; CHECK: testb
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; CHECK: je
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; CHECK: jmp
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define fastcc void @test3(double* nocapture %u) nounwind uwtable ssp {
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entry:
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br i1 undef, label %meshBB1, label %meshBB5
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for.inc8.us.i: ; preds = %for.body3.us.i
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br i1 undef, label %meshBB1, label %meshBB
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for.body3.us.i: ; preds = %meshBB, %for.body3.lr.ph.us.i
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%indvars.iv.i.SV.phi = phi i64 [ %indvars.iv.next.i, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
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%storemerge13.us.i.SV.phi = phi i32 [ 0, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
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%Opq.sa.calc12 = sub i32 undef, 227
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%0 = add nsw i64 %indvars.iv.i.SV.phi, %indvars.iv8.i.SV.phi26
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%1 = trunc i64 %0 to i32
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%mul.i.us.i = mul nsw i32 0, %1
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%arrayidx5.us.i = getelementptr inbounds double, double* %u, i64 %indvars.iv.i.SV.phi
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%2 = load double, double* %arrayidx5.us.i, align 8
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%indvars.iv.next.i = add i64 %indvars.iv.i.SV.phi, 1
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br i1 undef, label %for.inc8.us.i, label %meshBB
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for.body3.lr.ph.us.i: ; preds = %meshBB1, %meshBB
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%indvars.iv8.i.SV.phi26 = phi i64 [ undef, %meshBB1 ], [ %indvars.iv8.i.SV.phi24, %meshBB ]
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%arrayidx.us.i = getelementptr inbounds double, double* undef, i64 %indvars.iv8.i.SV.phi26
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%3 = add i64 %indvars.iv8.i.SV.phi26, 1
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br label %for.body3.us.i
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for.inc8.us.i2: ; preds = %meshBB5
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unreachable
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eval_At_times_u.exit: ; preds = %meshBB5
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ret void
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meshBB: ; preds = %for.body3.us.i, %for.inc8.us.i
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%indvars.iv8.i.SV.phi24 = phi i64 [ undef, %for.body3.us.i ], [ %3, %for.inc8.us.i ]
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%meshStackVariable.phi = phi i32 [ %Opq.sa.calc12, %for.body3.us.i ], [ undef, %for.inc8.us.i ]
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br i1 undef, label %for.body3.lr.ph.us.i, label %for.body3.us.i
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meshBB1: ; preds = %for.inc8.us.i, %entry
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br label %for.body3.lr.ph.us.i
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meshBB5: ; preds = %entry
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br i1 undef, label %eval_At_times_u.exit, label %for.inc8.us.i2
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}
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