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Fix for PR2687: Add patterns to match sint_to_fp and fp_to_sint for <2 x

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i32>.  This is a little messy, but it works.

We should really get rid of the intrinsics, though, since they map
perfectly well to standard LLVM instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55864 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2008-09-05 23:07:03 +00:00
parent 8a11053f3c
commit d0c0fae63b
2 changed files with 19 additions and 0 deletions
lib/Target/X86
X86InstrSSE.td
test/CodeGen/X86
2008-09-05-sinttofp-2xi32.ll

4
lib/Target/X86/X86InstrSSE.td

@ -3080,6 +3080,10 @@ def : Pat<(v4f32 (sint_to_fp (v4i32 VR128:$src))),
(Int_CVTDQ2PSrr VR128:$src)>, Requires<[HasSSE2]>;
def : Pat<(v4i32 (fp_to_sint (v4f32 VR128:$src))),
(Int_CVTTPS2DQrr VR128:$src)>, Requires<[HasSSE2]>;
def : Pat<(v2f64 (sint_to_fp (v2i32 VR64:$src))),
(Int_CVTPI2PDrr VR64:$src)>, Requires<[HasSSE2]>;
def : Pat<(v2i32 (fp_to_sint (v2f64 VR128:$src))),
(Int_CVTTPD2PIrr VR128:$src)>, Requires<[HasSSE2]>;
// Use movaps / movups for SSE integer load / store (one byte shorter).
def : Pat<(alignedloadv4i32 addr:$src),

15
test/CodeGen/X86/2008-09-05-sinttofp-2xi32.ll Normal file

@ -0,0 +1,15 @@
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep cvttpd2pi | count 1
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep cvtpi2pd | count 1
; PR2687
define <2 x double> @a(<2 x i32> %x) nounwind {
entry:
%y = sitofp <2 x i32> %x to <2 x double>
ret <2 x double> %y
}
define <2 x i32> @b(<2 x double> %x) nounwind {
entry:
%y = fptosi <2 x double> %x to <2 x i32>
ret <2 x i32> %y
}