forked from OSchip/llvm-project
65 lines
2.3 KiB
LLVM
65 lines
2.3 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
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;
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; Verify we do not hoist I[c] without execution context because it
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; is executed in a statement with an invalid domain and it depends
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; on a parameter that was specialized by the domain.
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;
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; CHECK: Invariant Accesses: {
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [c] -> { Stmt_if_then[i0] -> MemRef_I[-129] };
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; CHECK-NEXT: Execution Context: [c] -> { : 1 = 0 }
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; CHECK-NEXT: }
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;
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; TODO: FIXME: We should remove the statement as it has an empty domain.
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; CHECK: Stmt_if_then
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [c] -> { Stmt_if_then[i0] : 1 = 0 };
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;
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; int I[1024];
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; void f(int *A, unsigned char c) {
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; for (int i = 0; i < 10; i++)
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; if ((signed char)(c + (unsigned char)1) == 127)
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; A[i] += I[c];
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; else
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; A[i] = 0;
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; }
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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@I = common global [1024 x i32] zeroinitializer, align 16
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define void @f(i32* %A, i8 zeroext %c) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%exitcond = icmp ne i64 %indvars.iv, 10
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%add = add i8 %c, 1
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%cmp3 = icmp eq i8 %add, 128
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%arrayidx6 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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br i1 %cmp3, label %if.then, label %if.else
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if.then: ; preds = %for.body
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%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @I, i64 0, i8 %c
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%tmp = load i32, i32* %arrayidx, align 4
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%tmp1 = load i32, i32* %arrayidx6, align 4
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%add7 = add nsw i32 %tmp1, %tmp
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store i32 %add7, i32* %arrayidx6, align 4
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br label %for.inc
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if.else: ; preds = %if.then, %for.body
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store i32 0, i32* %arrayidx6, align 4
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br label %for.inc
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for.inc: ; preds = %if.else, if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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