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author | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2013-12-10 15:22:48 +0000 |
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committer | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2013-12-10 15:22:48 +0000 |
commit | 4b3fcc21ec0561d09105862a63a9e8a66696ec8c (patch) | |
tree | df4c7f64db801d2bd3243ac4d1e98c78a35ddfce /include | |
parent | bb0e2be6a3fa92f5d14c7e7f54c13c6868da4ac8 (diff) | |
download | llvm-4b3fcc21ec0561d09105862a63a9e8a66696ec8c.tar.gz llvm-4b3fcc21ec0561d09105862a63a9e8a66696ec8c.tar.bz2 llvm-4b3fcc21ec0561d09105862a63a9e8a66696ec8c.tar.xz |
Ensure that the backend no longer emits unnecessary vector insert instructions
immediately after SSE scalar fp instructions like addss or mulss.
Added patterns to select SSE scalar fp arithmetic instructions from a scalar
fp operation followed by a blend.
For example, given the following code:
__m128 foo(__m128 A, __m128 B) {
A[0] += B[0];
return A;
}
previously we generated:
addss %xmm0, %xmm1
movss %xmm1, %xmm0
now we generate:
addss %xmm1, %xmm0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196925 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions