; 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 }