[X86][3DNow!] Add tests to ensure PFMAX/PFMIN are not commuted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294848 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/commute-3dnow.ll b/test/CodeGen/X86/commute-3dnow.ll
index 647cbee9656d9b3ba773ce521514ec9ed7af0687..b7a01efe2d3a0ac83a5a19626b27157fd8349def 100644 (file)
--- a/test/CodeGen/X86/commute-3dnow.ll
+++ b/test/CodeGen/X86/commute-3dnow.ll
@@ -118,6 +118,70 @@ define void @commute_m_pfmul(x86_mmx *%a0, x86_mmx *%a1, x86_mmx *%a2) nounwind
 }
 declare x86_mmx @llvm.x86.3dnow.pfmul(x86_mmx, x86_mmx)
 
+; PFMAX can't commute without fast-math.
+define void @commute_m_pfmax(x86_mmx *%a0, x86_mmx *%a1, x86_mmx *%a2) nounwind {
+; X32-LABEL: commute_m_pfmax:
+; X32:       # BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X32-NEXT:    movq (%edx), %mm0
+; X32-NEXT:    movq (%ecx), %mm1
+; X32-NEXT:    pfmax (%eax), %mm0
+; X32-NEXT:    pfmax %mm0, %mm1
+; X32-NEXT:    movq %mm1, (%ecx)
+; X32-NEXT:    retl
+;
+; X64-LABEL: commute_m_pfmax:
+; X64:       # BB#0:
+; X64-NEXT:    movq (%rdi), %mm0
+; X64-NEXT:    movq (%rdx), %mm1
+; X64-NEXT:    pfmax (%rsi), %mm0
+; X64-NEXT:    pfmax %mm0, %mm1
+; X64-NEXT:    movq %mm1, (%rdx)
+; X64-NEXT:    retq
+  %1 = load x86_mmx, x86_mmx* %a0
+  %2 = load x86_mmx, x86_mmx* %a1
+  %3 = load x86_mmx, x86_mmx* %a2
+  %4 = tail call x86_mmx @llvm.x86.3dnow.pfmax(x86_mmx %1, x86_mmx %2)
+  %5 = tail call x86_mmx @llvm.x86.3dnow.pfmax(x86_mmx %3, x86_mmx %4)
+  store x86_mmx %5, x86_mmx* %a2
+  ret void
+}
+declare x86_mmx @llvm.x86.3dnow.pfmax(x86_mmx, x86_mmx)
+
+; PFMIN can't commute without fast-math.
+define void @commute_m_pfmin(x86_mmx *%a0, x86_mmx *%a1, x86_mmx *%a2) nounwind {
+; X32-LABEL: commute_m_pfmin:
+; X32:       # BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X32-NEXT:    movq (%edx), %mm0
+; X32-NEXT:    movq (%ecx), %mm1
+; X32-NEXT:    pfmin (%eax), %mm0
+; X32-NEXT:    pfmin %mm0, %mm1
+; X32-NEXT:    movq %mm1, (%ecx)
+; X32-NEXT:    retl
+;
+; X64-LABEL: commute_m_pfmin:
+; X64:       # BB#0:
+; X64-NEXT:    movq (%rdi), %mm0
+; X64-NEXT:    movq (%rdx), %mm1
+; X64-NEXT:    pfmin (%rsi), %mm0
+; X64-NEXT:    pfmin %mm0, %mm1
+; X64-NEXT:    movq %mm1, (%rdx)
+; X64-NEXT:    retq
+  %1 = load x86_mmx, x86_mmx* %a0
+  %2 = load x86_mmx, x86_mmx* %a1
+  %3 = load x86_mmx, x86_mmx* %a2
+  %4 = tail call x86_mmx @llvm.x86.3dnow.pfmin(x86_mmx %1, x86_mmx %2)
+  %5 = tail call x86_mmx @llvm.x86.3dnow.pfmin(x86_mmx %3, x86_mmx %4)
+  store x86_mmx %5, x86_mmx* %a2
+  ret void
+}
+declare x86_mmx @llvm.x86.3dnow.pfmin(x86_mmx, x86_mmx)
+
 define void @commute_m_pfcmpeq(x86_mmx *%a0, x86_mmx *%a1, x86_mmx *%a2) nounwind {
 ; X32-LABEL: commute_m_pfcmpeq:
 ; X32:       # BB#0: