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[LSV] Don't assume that bitcast ops are Instructions.

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Summary:
When we ask the builder to create a bitcast on a constant, we get back a
constant, not an instruction.

Reviewers: asbirlea

Subscribers: jholewinski, mzolotukhin, llvm-commits, arsenm

Differential Revision: https://reviews.llvm.org/D22878

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276922 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Lebar
2016-07-27 21:45:48 +00:00
parent ca740c1356
commit d4f04da5fe
2 changed files with 20 additions and 9 deletions
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test/Transforms/LoadStoreVectorizer/NVPTX/non-instr-bitcast.ll
+14
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; RUN: opt -mtriple=nvptx64-nvidia-cuda -load-store-vectorizer -S -o - %s | FileCheck %s
; Load from a constant. This can be vectorized, but shouldn't crash us.
@global = internal addrspace(1) constant [4 x float] [float 0xBF71111120000000, float 0x3F70410420000000, float 0xBF81111120000000, float 0x3FB5555560000000], align 4
define void @foo() {
; CHECK: load <4 x float>
%a = load float, float addrspace(1)* getelementptr inbounds ([4 x float], [4 x float] addrspace(1)* @global, i64 0, i64 0), align 4
%b = load float, float addrspace(1)* getelementptr inbounds ([4 x float], [4 x float] addrspace(1)* @global, i64 0, i64 1), align 4
%c = load float, float addrspace(1)* getelementptr inbounds ([4 x float], [4 x float] addrspace(1)* @global, i64 0, i64 2), align 4
%d = load float, float addrspace(1)* getelementptr inbounds ([4 x float], [4 x float] addrspace(1)* @global, i64 0, i64 3), align 4
ret void
}