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[X86] Add test to show missed opportunity to use masked vcvtps2pd for vselect+extload. 

llvm-svn: 362198
This commit is contained in:
Craig Topper 2019-05-31 06:21:49 +00:00
parent 8cb076ec6e
commit 73b07284df
1 changed files with 24 additions and 0 deletions
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24
llvm/test/CodeGen/X86/avx512-cvt.ll
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@ -778,6 +778,30 @@ define <4 x double> @f32to4f64_mask(<4 x float> %b, <4 x double> %b1, <4 x doubl
ret <4 x double> %c
}
define <4 x double> @f32to4f64_mask_load(<4 x float>* %p, <4 x double> %b1, <4 x double> %a1) {
; NOVL-LABEL: f32to4f64_mask_load:
; NOVL: # %bb.0:
; NOVL-NEXT: # kill: def $ymm1 killed $ymm1 def $zmm1
; NOVL-NEXT: # kill: def $ymm0 killed $ymm0 def $zmm0
; NOVL-NEXT: vcvtps2pd (%rdi), %ymm2
; NOVL-NEXT: vcmpltpd %zmm1, %zmm0, %k1
; NOVL-NEXT: vmovapd %zmm2, %zmm0 {%k1} {z}
; NOVL-NEXT: # kill: def $ymm0 killed $ymm0 killed $zmm0
; NOVL-NEXT: retq
;
; VL-LABEL: f32to4f64_mask_load:
; VL: # %bb.0:
; VL-NEXT: vcvtps2pd (%rdi), %ymm2
; VL-NEXT: vcmpltpd %ymm1, %ymm0, %k1
; VL-NEXT: vmovapd %ymm2, %ymm0 {%k1} {z}
; VL-NEXT: retq
%b = load <4 x float>, <4 x float>* %p
%a = fpext <4 x float> %b to <4 x double>
%mask = fcmp ogt <4 x double> %a1, %b1
%c = select <4 x i1> %mask, <4 x double> %a, <4 x double> zeroinitializer
ret <4 x double> %c
}
define <2 x double> @f32tof64_inreg(<2 x double> %a0, <4 x float> %a1) nounwind {
; ALL-LABEL: f32tof64_inreg:
; ALL: # %bb.0: