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Add AVX suport for fpextend. 

Original patch by Syoyo Fujita with more comments by me.

llvm-svn: 133153
This commit is contained in:
Bruno Cardoso Lopes 2011-06-16 07:03:21 +00:00
parent 631abd9365
commit bbf2ab990f
2 changed files with 29 additions and 0 deletions
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19
llvm/lib/Target/X86/X86InstrSSE.td
View File

@ -2063,6 +2063,15 @@ def : Pat<(v16i8 immAllZerosV), (V_SET0PI)>;
def : Pat<(f32 (vector_extract (v4f32 VR128:$src), (iPTR 0))),
(f32 (EXTRACT_SUBREG (v4f32 VR128:$src), sub_ss))>;
// FIXME: According to the intel manual, DEST[127:64] <- SRC1[127:64], while
// in the non-AVX version bits 127:64 aren't touched. Find a better way to
// represent this instead of always zeroing SRC1. One possible solution is
// to represent the instruction w/ something similar as the "$src1 = $dst"
// constraint but without the tied operands.
def : Pat<(extloadf32 addr:$src),
(VCVTSS2SDrm (f32 (EXTRACT_SUBREG (AVX_SET0PS), sub_ss)), addr:$src)>,
Requires<[HasAVX, OptForSpeed]>;
//===----------------------------------------------------------------------===//
// SSE 1 & 2 - Load/Store XCSR register
//===----------------------------------------------------------------------===//
@ -3589,6 +3598,16 @@ let Predicates = [HasSSE2] in
def : Pat<(fextend (loadf32 addr:$src)),
(CVTSS2SDrm addr:$src)>;
// FIXME: According to the intel manual, DEST[127:64] <- SRC1[127:64], while
// in the non-AVX version bits 127:64 aren't touched. Find a better way to
// represent this instead of always zeroing SRC1. One possible solution is
// to represent the instruction w/ something similar as the "$src1 = $dst"
// constraint but without the tied operands.
let Predicates = [HasAVX] in
def : Pat<(fextend (loadf32 addr:$src)),
(VCVTSS2SDrm (f32 (EXTRACT_SUBREG (AVX_SET0PS), sub_ss)),
addr:$src)>;
// bit_convert
let Predicates = [HasXMMInt] in {
def : Pat<(v2i64 (bitconvert (v4i32 VR128:$src))), (v2i64 VR128:$src)>;

10
llvm/test/CodeGen/X86/avx-128.ll
View File

@ -10,3 +10,13 @@ entry:
ret void
}
define void @fpext() nounwind uwtable {
entry:
%f = alloca float, align 4
%d = alloca double, align 8
%tmp = load float* %f, align 4
; CHECK: vcvtss2sd
%conv = fpext float %tmp to double
store double %conv, double* %d, align 8
ret void
}