llvm/mmx-bitcast-fold.ll at 11a12c2c07f7e11c5fecc4f3a601a58f25e6a531 - llvm - Gitea: Git with a cup of tea

RPCS3/llvm

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Teresa Johnson 218731256d Don't fold double constant to an integer if dest type not integral

Summary:
I encountered this issue when constant folding during inlining tried to
fold away a bitcast of a double to an x86_mmx, which is not an integral
type. The test case exposes the same issue with a smaller code snippet
during early CSE.

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D18528

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265367 91177308-0d34-0410-b5e6-96231b3b80d8

2016-04-04 23:50:46 +00:00

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 ; RUN: opt -mtriple=x86_64-- -early-cse < %s -S | FileCheck %s
 ; CHECK: @foo(x86_mmx bitcast (double 0.000000e+00 to x86_mmx))
 define void @bar() {
 entry:
   %0 = bitcast double 0.0 to x86_mmx
   %1 = call x86_mmx @foo(x86_mmx %0)
   ret void
 }
 declare x86_mmx @foo(x86_mmx)