| ; RUN: llc < %s -O3 -march=x86-64 -mcpu=core2 | FileCheck %s |
| |
| declare i1 @check() nounwind |
| declare i1 @foo(i8*, i8*, i8*) nounwind |
| |
| ; Check that redundant phi elimination ran |
| ; CHECK: @test |
| ; CHECK: %while.body.i |
| ; CHECK: movs |
| ; CHECK-NOT: movs |
| ; CHECK: %for.end.i |
| define i32 @test(i8* %base) nounwind uwtable ssp { |
| 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* %base, i64 %add.ptr.sum |
| %0 = load i8* %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* %base, i64 %add.ptr.sum.i |
| %cmp2 = tail call i1 @foo(i8* %add.ptr.i144, i8* %add.ptr.i144, i8* 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. |
| ; |
| ; CHECK: @test2 |
| ; CHECK: %entry |
| ; CHECK-NOT: mov |
| ; CHECK: je |
| define void @test2(i32 %n) nounwind uwtable { |
| 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 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]* @tags, i64 0, i64 0, i32 2), %entry ] |
| %k.0 = load i32* %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]* @tags, i64 0, i64 %indvars.iv1163, i32 1 |
| %1 = load i32* %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]* @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. |
| ; |
| ; CHECK: @test3 |
| ; CHECK: %for.body3.lr.ph.us.i.loopexit |
| ; CHECK-NEXT: in Loop: Header |
| ; CHECK-NEXT: incq |
| ; CHECK-NEXT: %for.body3.us.i |
| ; CHECK-NEXT: Inner Loop |
| ; CHECK: testb |
| ; CHECK: jne |
| ; CHECK: jmp |
| define fastcc void @test3(double* nocapture %u) nounwind uwtable ssp { |
| 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* %u, i64 %indvars.iv.i.SV.phi |
| %2 = load double* %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* 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 |
| } |
