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[X86] Modify two tests that passed undef to both sides of a vselect to instead pass unique values. 

I'd like to teach DAG combine to remove vselects where both sides are identical and these tests were in the way of that.

llvm-svn: 287903
This commit is contained in:
Craig Topper 2016-11-24 21:48:50 +00:00
parent b59118f6ec
commit d621e3a25b
2 changed files with 14 additions and 12 deletions
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8
llvm/test/CodeGen/X86/2011-10-19-widen_vselect.ll
View File

@ -6,9 +6,9 @@
; CHECK-LABEL: simple_widen
; CHECK-NOT: blend
; CHECK: ret
define void @simple_widen() {
define void @simple_widen(<2 x float> %a, <2 x float> %b) {
entry:
%0 = select <2 x i1> undef, <2 x float> undef, <2 x float> undef
%0 = select <2 x i1> undef, <2 x float> %a, <2 x float> %b
store <2 x float> %0, <2 x float>* undef
ret void
}
@ -17,10 +17,10 @@ entry:
; CHECK: blend
; CHECK: ret
define void @complex_inreg_work() {
define void @complex_inreg_work(<2 x float> %a, <2 x float> %b) {
entry:
%0 = fcmp oeq <2 x float> undef, undef
%1 = select <2 x i1> %0, <2 x float> undef, <2 x float> undef
%1 = select <2 x i1> %0, <2 x float> %a, <2 x float> %b
store <2 x float> %1, <2 x float>* undef
ret void
}

18
llvm/test/CodeGen/X86/2011-10-21-widen-cmp.ll
View File

@ -4,34 +4,36 @@
; Check that a <4 x float> compare is generated and that we are
; not stuck in an endless loop.
define void @cmp_2_floats() {
define void @cmp_2_floats(<2 x float> %a, <2 x float> %b) {
; CHECK-LABEL: cmp_2_floats:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: movaps %xmm0, %xmm2
; CHECK-NEXT: cmpordps %xmm0, %xmm0
; CHECK-NEXT: pmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
; CHECK-NEXT: psllq $32, %xmm0
; CHECK-NEXT: pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
; CHECK-NEXT: pslld $31, %xmm0
; CHECK-NEXT: blendvps %xmm0, %xmm0
; CHECK-NEXT: movlps %xmm0, (%rax)
; CHECK-NEXT: blendvps %xmm2, %xmm1
; CHECK-NEXT: movlps %xmm1, (%rax)
; CHECK-NEXT: retq
entry:
%0 = fcmp oeq <2 x float> undef, undef
%1 = select <2 x i1> %0, <2 x float> undef, <2 x float> undef
%1 = select <2 x i1> %0, <2 x float> %a, <2 x float> %b
store <2 x float> %1, <2 x float>* undef
ret void
}
define void @cmp_2_doubles() {
define void @cmp_2_doubles(<2 x double> %a, <2 x double> %b) {
; CHECK-LABEL: cmp_2_doubles:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: movapd %xmm0, %xmm2
; CHECK-NEXT: cmpordpd %xmm0, %xmm0
; CHECK-NEXT: blendvpd %xmm0, %xmm0
; CHECK-NEXT: movapd %xmm0, (%rax)
; CHECK-NEXT: blendvpd %xmm2, %xmm1
; CHECK-NEXT: movapd %xmm1, (%rax)
; CHECK-NEXT: retq
entry:
%0 = fcmp oeq <2 x double> undef, undef
%1 = select <2 x i1> %0, <2 x double> undef, <2 x double> undef
%1 = select <2 x i1> %0, <2 x double> %a, <2 x double> %b
store <2 x double> %1, <2 x double>* undef
ret void
}