| ; RUN: opt %loadPolly -S -polly-prepare < %s | FileCheck %s |
| ; ModuleID = 'single_loop_trivial_phi.ll' |
| ; |
| ; int f(int *A, int N) { |
| ; int i, sum = 0; |
| ; for (i = 0; i < N; i++) |
| ; sum += A[i]; |
| ; return sum; |
| ; } |
| ; ModuleID = 'stack-slots.ll' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @f(i32* %A, i32 %N) #0 { |
| entry: |
| %cmp1 = icmp sgt i32 %N, 0 |
| br i1 %cmp1, label %for.inc.lr.ph, label %for.end |
| |
| for.inc.lr.ph: ; preds = %entry |
| %0 = zext i32 %N to i64 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.inc.lr.ph, %for.inc |
| %sum.03 = phi i32 [ 0, %for.inc.lr.ph ], [ %add, %for.inc ] |
| %indvars.iv2 = phi i64 [ 0, %for.inc.lr.ph ], [ %indvars.iv.next, %for.inc ] |
| %arrayidx = getelementptr i32* %A, i64 %indvars.iv2 |
| %tmp1 = load i32* %arrayidx, align 4 |
| %add = add nsw i32 %tmp1, %sum.03 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv2, 1 |
| %exitcond = icmp ne i64 %indvars.iv.next, %0 |
| br i1 %exitcond, label %for.inc, label %for.cond.for.end_crit_edge |
| |
| for.cond.for.end_crit_edge: ; preds = %for.inc |
| %add.lcssa = phi i32 [ %add, %for.inc ] |
| br label %for.end |
| |
| for.end: ; preds = %for.cond.for.end_crit_edge, %entry |
| %sum.0.lcssa = phi i32 [ %add.lcssa, %for.cond.for.end_crit_edge ], [ 0, %entry ] |
| ret i32 %sum.0.lcssa |
| } |
| |
| attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| |
| ; Verify that only two allocas are created. |
| ; Both are needed for the %sum.0 PHI node and none should be created for the |
| ; %sum.0.lcssa PHI node |
| ; CHECK: alloca |
| ; CHECK: alloca |
| ; CHECK-NOT: alloca |