3717aa5ddb
The recent expression type changes still need more discussion, which will happen on phabricator or on the mailing list. The precise list of commits reverted are: - "Refactor division generation code" - "[NFC] Generate runtime checks after the SCoP" - "[FIX] Determine insertion point during SCEV expansion" - "Look through IntToPtr & PtrToInt instructions" - "Use minimal types for generated expressions" - "Temporarily promote values to i64 again" - "[NFC] Avoid unnecessary comparison for min/max expressions" - "[Polly] Fix -Wunused-variable warnings (NFC)" - "[NFC] Simplify min/max expression generation" - "Simplify the type adjustment in the IslExprBuilder" Some of them are just reverted as we would otherwise get conflicts. I will try to re-commit them if possible. llvm-svn: 272483
54 lines
2.0 KiB
LLVM
54 lines
2.0 KiB
LLVM
; RUN: opt %loadPolly -S -polly-codegen < %s | FileCheck %s
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;
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; We should only access (or compute the address of) "the first element" of %S
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; as it is a single struct not a struct array. The maximal access to S, thus
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; S->B[1023] is for ScalarEvolution an access with offset of 1423, 1023 for the
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; index inside the B part of S and 400 to skip the Dummy array in S. Note that
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; these numbers are relative to the actual type of &S->B[i] (char*) not to the
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; type of S (struct st *) or something else.
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;
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; Verify that we do not use the offset 1423 into a non existent S array when we
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; compute runtime alias checks but treat it as if it was a char array.
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;
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; CHECK: %polly.access.cast.S = bitcast %struct.st* %S to i8*
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; CHECK: %polly.access.S = getelementptr i8, i8* %polly.access.cast.S, i64 1424
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;
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; struct st {
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; int Dummy[100];
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; char B[100];
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; };
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;
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; void jd(int *A, struct st *S) {
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; for (int i = 0; i < 1024; i++)
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; A[i] = S->B[i];
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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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%struct.st = type { [100 x i32], [100 x i8] }
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define void @jd(i32* %A, %struct.st* %S) {
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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, 1024
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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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%arrayidx = getelementptr inbounds %struct.st, %struct.st* %S, i64 0, i32 1, i64 %indvars.iv
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%tmp = load i8, i8* %arrayidx, align 1
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%conv = sext i8 %tmp to i32
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%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx2, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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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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