1a11faeedSBjorn Pettersson; RUN: opt -S -passes=loop-rotate -verify-memoryssa < %s | FileCheck %s 2cee313d2SEric Christophertarget datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 3cee313d2SEric Christophertarget triple = "x86_64-apple-darwin10.0" 4cee313d2SEric Christopher 5cee313d2SEric Christopher; PR5837 6*e730e7d2SNikita Popovdefine void @test(i32 %N, ptr %G) nounwind ssp { 7cee313d2SEric Christopherentry: 8cee313d2SEric Christopher br label %for.cond 9cee313d2SEric Christopher 10cee313d2SEric Christopherfor.cond: ; preds = %for.body, %entry 11cee313d2SEric Christopher %j.0 = phi i64 [ 1, %entry ], [ %inc, %for.body ] ; <i64> [#uses=5] 12cee313d2SEric Christopher %cmp = icmp slt i64 %j.0, 1000 ; <i1> [#uses=1] 13cee313d2SEric Christopher br i1 %cmp, label %for.body, label %for.end 14cee313d2SEric Christopher 15cee313d2SEric Christopherfor.body: ; preds = %for.cond 16*e730e7d2SNikita Popov %arrayidx = getelementptr inbounds double, ptr %G, i64 %j.0 ; <ptr> [#uses=1] 17*e730e7d2SNikita Popov %tmp3 = load double, ptr %arrayidx ; <double> [#uses=1] 18cee313d2SEric Christopher %sub = sub i64 %j.0, 1 ; <i64> [#uses=1] 19*e730e7d2SNikita Popov %arrayidx6 = getelementptr inbounds double, ptr %G, i64 %sub ; <ptr> [#uses=1] 20*e730e7d2SNikita Popov %tmp7 = load double, ptr %arrayidx6 ; <double> [#uses=1] 21cee313d2SEric Christopher %add = fadd double %tmp3, %tmp7 ; <double> [#uses=1] 22*e730e7d2SNikita Popov %arrayidx10 = getelementptr inbounds double, ptr %G, i64 %j.0 ; <ptr> [#uses=1] 23*e730e7d2SNikita Popov store double %add, ptr %arrayidx10 24cee313d2SEric Christopher %inc = add nsw i64 %j.0, 1 ; <i64> [#uses=1] 25cee313d2SEric Christopher br label %for.cond 26cee313d2SEric Christopher 27cee313d2SEric Christopherfor.end: ; preds = %for.cond 28cee313d2SEric Christopher ret void 29cee313d2SEric Christopher} 30cee313d2SEric Christopher 31cee313d2SEric Christopher; Should only end up with one phi. 32cee313d2SEric Christopher; CHECK-LABEL: define void @test( 33cee313d2SEric Christopher; CHECK-NEXT: entry: 34cee313d2SEric Christopher; CHECK-NEXT: br label %for.body 35cee313d2SEric Christopher; CHECK: for.body: 36cee313d2SEric Christopher; CHECK-NEXT: %j.01 = phi i64 37cee313d2SEric Christopher; CHECK-NOT: br 38cee313d2SEric Christopher; CHECK: br i1 %cmp, label %for.body, label %for.end 39cee313d2SEric Christopher; CHECK: for.end: 40cee313d2SEric Christopher; CHECK-NEXT: ret void 41