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[LLE] Add testcase for the fix in r262267 

llvm-svn: 262280
This commit is contained in:
Adam Nemet 2016-03-01 00:50:14 +00:00
parent b8486e5a32
commit 948775196d
1 changed files with 43 additions and 0 deletions
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43
llvm/test/Transforms/LoopLoadElim/type-mismatch.ll Normal file
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; RUN: opt -loop-load-elim -S < %s | FileCheck %s
; Don't crash if the store and the load use different types.
;
; for (unsigned i = 0; i < 100; i++) {
; A[i+1] = B[i] + 2;
; C[i] = ((float*)A)[i] * 2;
; }
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* noalias %A, i32* noalias %B, i32* noalias %C, i64 %N) {
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%Aidx_next = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next
%Bidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
%Cidx = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
%Aidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%Aidx.float = bitcast i32* %Aidx to float*
%b = load i32, i32* %Bidx, align 4
%a_p1 = add i32 %b, 2
store i32 %a_p1, i32* %Aidx_next, align 4
; CHECK: %a = load float, float* %Aidx.float, align 4
%a = load float, float* %Aidx.float, align 4
; CHECK-NEXT: %c = fmul float %a, 2.0
%c = fmul float %a, 2.0
%c.int = fptosi float %c to i32
store i32 %c.int, i32* %Cidx, align 4
%exitcond = icmp eq i64 %indvars.iv.next, %N
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}