| ; RUN: opt %loadPolly -polly-delicm -analyze -pass-remarks-missed=polly-delicm < %s 2>&1 | FileCheck %s |
| ; |
| ; void func(double *A) { |
| ; for (int j = 0; j < 2; j += 1) { /* outer */ |
| ; memset(A[j], 0, sizeof(double)); |
| ; double phi = 0.0; |
| ; for (int i = 0; i < 4; i += 1) /* reduction */ |
| ; phi += 4.2; |
| ; if (phi >= 0.0) |
| ; A[j] = phi; |
| ; } |
| ; } |
| ; |
| |
| define void @func(double* noalias nonnull %A) { |
| entry: |
| br label %outer.preheader |
| |
| outer.preheader: |
| br label %outer.for |
| |
| outer.for: |
| %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc] |
| %j.cmp = icmp slt i32 %j, 2 |
| br i1 %j.cmp, label %reduction.preheader, label %outer.exit |
| |
| |
| reduction.preheader: |
| br label %reduction.for |
| |
| reduction.for: |
| %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc] |
| %phi = phi double [0.0, %reduction.preheader], [%add, %reduction.inc] |
| %i.cmp = icmp slt i32 %i, 4 |
| br i1 %i.cmp, label %body, label %reduction.exit |
| |
| |
| |
| body: |
| %add = fadd double %phi, 4.2 |
| br label %reduction.inc |
| |
| |
| |
| reduction.inc: |
| %i.inc = add nuw nsw i32 %i, 1 |
| br label %reduction.for |
| |
| reduction.exit: |
| %phi.cmp = fcmp ogt double %phi, 0.0 |
| br i1 %phi.cmp , label %reduction.exit_true, label %reduction.exit_false |
| |
| reduction.exit_true: |
| %A_idx = getelementptr inbounds double, double* %A, i32 %j |
| store double %phi, double* %A_idx |
| br label %outer.inc |
| |
| reduction.exit_false: |
| br label %outer.inc |
| |
| |
| outer.inc: |
| %j.inc = add nuw nsw i32 %j, 1 |
| br label %outer.for |
| |
| outer.exit: |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| |
| ; CHECK: Skipped possible mapping target because it is not an unconditional overwrite |
