| ; RUN: opt -S -loop-rotate < %s | FileCheck %s |
| ; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s |
| target 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" |
| target triple = "x86_64-apple-darwin10.0" |
| |
| ; PR5837 |
| define void @test(i32 %N, double* %G) nounwind ssp { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.body, %entry |
| %j.0 = phi i64 [ 1, %entry ], [ %inc, %for.body ] ; <i64> [#uses=5] |
| %cmp = icmp slt i64 %j.0, 1000 ; <i1> [#uses=1] |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| %arrayidx = getelementptr inbounds double, double* %G, i64 %j.0 ; <double*> [#uses=1] |
| %tmp3 = load double, double* %arrayidx ; <double> [#uses=1] |
| %sub = sub i64 %j.0, 1 ; <i64> [#uses=1] |
| %arrayidx6 = getelementptr inbounds double, double* %G, i64 %sub ; <double*> [#uses=1] |
| %tmp7 = load double, double* %arrayidx6 ; <double> [#uses=1] |
| %add = fadd double %tmp3, %tmp7 ; <double> [#uses=1] |
| %arrayidx10 = getelementptr inbounds double, double* %G, i64 %j.0 ; <double*> [#uses=1] |
| store double %add, double* %arrayidx10 |
| %inc = add nsw i64 %j.0, 1 ; <i64> [#uses=1] |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret void |
| } |
| |
| ; Should only end up with one phi. |
| ; CHECK-LABEL: define void @test( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label %for.body |
| ; CHECK: for.body: |
| ; CHECK-NEXT: %j.01 = phi i64 |
| ; CHECK-NOT: br |
| ; CHECK: br i1 %cmp, label %for.body, label %for.end |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |