| ; RUN: opt %loadPolly \ |
| ; RUN: -S -polly-codegen < %s | FileCheck %s |
| ; |
| ; void f(int *A, int N) { |
| ; for (int i = 0; i < N; i++) |
| ; if (A[i]) |
| ; switch (i % 4) { |
| ; case 0: |
| ; A[i] += 1; |
| ; break; |
| ; case 1: |
| ; A[i] += 2; |
| ; break; |
| ; } |
| ; } |
| ; |
| ; CHECK: polly.stmt.if.then: |
| ; CHECK: %1 = trunc i64 %polly.indvar to i32 |
| ; CHECK: %p_rem = srem i32 %1, 4 |
| ; CHECK: switch i32 %p_rem, label %polly.stmt.sw.epilog [ |
| ; CHECK: i32 0, label %polly.stmt.sw.bb |
| ; CHECK: i32 1, label %polly.stmt.sw.bb.3 |
| ; CHECK: ] |
| ; |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @f(i32* %A, i32 %N) { |
| entry: |
| %tmp = sext i32 %N to i64 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %cmp = icmp slt i64 %indvars.iv, %tmp |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv |
| %tmp1 = load i32, i32* %arrayidx, align 4 |
| %tobool = icmp eq i32 %tmp1, 0 |
| br i1 %tobool, label %if.end, label %if.then |
| |
| if.then: ; preds = %for.body |
| %tmp2 = trunc i64 %indvars.iv to i32 |
| %rem = srem i32 %tmp2, 4 |
| switch i32 %rem, label %sw.epilog [ |
| i32 0, label %sw.bb |
| i32 1, label %sw.bb.3 |
| ] |
| |
| sw.bb: ; preds = %if.then |
| %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv |
| %tmp3 = load i32, i32* %arrayidx2, align 4 |
| %add = add nsw i32 %tmp3, 1 |
| store i32 %add, i32* %arrayidx2, align 4 |
| br label %sw.epilog |
| |
| sw.bb.3: ; preds = %if.then |
| %arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv |
| %tmp4 = load i32, i32* %arrayidx5, align 4 |
| %add6 = add nsw i32 %tmp4, 2 |
| store i32 %add6, i32* %arrayidx5, align 4 |
| br label %sw.epilog |
| |
| sw.epilog: ; preds = %sw.bb.3, %sw.bb, %if.then |
| br label %if.end |
| |
| if.end: ; preds = %for.body, %sw.epilog |
| br label %for.inc |
| |
| for.inc: ; preds = %if.end |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret void |
| } |