104 lines
3.5 KiB
LLVM
104 lines
3.5 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
|
|
; RUN: opt %loadPolly -polly-ast -analyze < %s | FileCheck %s --check-prefix=AST
|
|
;
|
|
; void f(int *A, int N) {
|
|
; for (int i = 0; i < N; i++)
|
|
; switch (i % 4) {
|
|
; case 0:
|
|
; A[i] += 1;
|
|
; break;
|
|
; case 1:
|
|
; break;
|
|
; case 2:
|
|
; A[i] += 2;
|
|
; break;
|
|
; case 3:
|
|
; break;
|
|
; }
|
|
; }
|
|
|
|
; CHECK: Statements {
|
|
; CHECK-NEXT: Stmt_sw_bb
|
|
; CHECK-NEXT: Domain :=
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb[i0] : (i0) mod 4 = 0 and 0 <= i0 < N };
|
|
; CHECK-NEXT: Schedule :=
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb[i0] -> [i0, 1] };
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb[i0] -> MemRef_A[i0] };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb[i0] -> MemRef_A[i0] };
|
|
; CHECK-NEXT: Stmt_sw_bb_2
|
|
; CHECK-NEXT: Domain :=
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb_2[i0] : (2 + i0) mod 4 = 0 and 2 <= i0 < N };
|
|
; CHECK-NEXT: Schedule :=
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb_2[i0] -> [i0, 0] };
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb_2[i0] -> MemRef_A[i0] };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_sw_bb_2[i0] -> MemRef_A[i0] };
|
|
; CHECK-NEXT: }
|
|
|
|
; AST: if (1)
|
|
;
|
|
; AST: for (int c0 = 0; c0 < N; c0 += 4) {
|
|
; AST-NEXT: Stmt_sw_bb(c0);
|
|
; AST-NEXT: if (N >= c0 + 3)
|
|
; AST-NEXT: Stmt_sw_bb_2(c0 + 2);
|
|
; AST-NEXT: }
|
|
;
|
|
; AST: else
|
|
; AST-NEXT: { /* original code */ }
|
|
|
|
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
|
|
%tmp1 = trunc i64 %indvars.iv to i32
|
|
%rem = srem i32 %tmp1, 4
|
|
switch i32 %rem, label %sw.epilog [
|
|
i32 0, label %sw.bb
|
|
i32 1, label %sw.bb.1
|
|
i32 2, label %sw.bb.2
|
|
i32 3, label %sw.bb.6
|
|
]
|
|
|
|
sw.bb: ; preds = %for.body
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%tmp2 = load i32, i32* %arrayidx, align 4
|
|
%add = add nsw i32 %tmp2, 1
|
|
store i32 %add, i32* %arrayidx, align 4
|
|
br label %sw.epilog
|
|
|
|
sw.bb.1: ; preds = %for.body
|
|
br label %sw.epilog
|
|
|
|
sw.bb.2: ; preds = %for.body
|
|
%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%tmp3 = load i32, i32* %arrayidx4, align 4
|
|
%add5 = add nsw i32 %tmp3, 2
|
|
store i32 %add5, i32* %arrayidx4, align 4
|
|
br label %sw.epilog
|
|
|
|
sw.bb.6: ; preds = %for.body
|
|
br label %sw.epilog
|
|
|
|
sw.epilog: ; preds = %sw.bb.6, %sw.bb.2, %sw.bb.1, %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
|
|
}
|