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; RUN: opt %loadPolly \
; RUN: -S -polly-codegen < %s | FileCheck %s
;
; void f(int *A, int N) {
; for (int i = 0; i < N; i++)
; switch (A[i]) {
; case 0:
; A[i] += 1;
; break;
; case 1:
; A[i] += 2;
; break;
; }
; }
;
; CHECK: polly.stmt.for.body:
; CHECK: %[[offset:.*]] = shl nuw nsw i64 %polly.indvar, 2
; CHECK: %scevgep = getelementptr i8, ptr %A, i64 %[[offset]]
; CHECK: %tmp1_p_scalar_ = load i32, ptr %scevgep, align 4
; CHECK: switch i32 %tmp1_p_scalar_, label %polly.stmt.sw.epilog.exit [
; 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(ptr %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, ptr %A, i64 %indvars.iv
%tmp1 = load i32, ptr %arrayidx, align 4
switch i32 %tmp1, label %sw.epilog [
i32 0, label %sw.bb
i32 1, label %sw.bb.3
]
sw.bb: ; preds = %for.body
%arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
%tmp2 = load i32, ptr %arrayidx2, align 4
%add = add nsw i32 %tmp2, 1
store i32 %add, ptr %arrayidx2, align 4
br label %sw.epilog
sw.bb.3: ; preds = %for.body
%arrayidx5 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
%tmp3 = load i32, ptr %arrayidx5, align 4
%add6 = add nsw i32 %tmp3, 2
store i32 %add6, ptr %arrayidx5, align 4
br label %sw.epilog
sw.epilog: ; preds = %sw.bb.3, %sw.bb, %for.body
br label %for.inc
for.inc: ; preds = %sw.epilog
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
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