CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / x86-setcc-int-to-fp-combine.ll

diff --git a/test/CodeGen/X86/x86-setcc-int-to-fp-combine.ll b/test/CodeGen/X86/x86-setcc-int-to-fp-combine.ll
index 86c4eb7c49e8e71fd3ee726af850cd0edb1244d3..248a9202e99795b5cf83698b53c926d9d7cbf280 100644 (file)
--- a/test/CodeGen/X86/x86-setcc-int-to-fp-combine.ll
+++ b/test/CodeGen/X86/x86-setcc-int-to-fp-combine.ll
@@ -2,10 +2,10 @@
 
 define <4 x float> @foo(<4 x float> %val, <4 x float> %test) nounwind {
 ; CHECK-LABEL: LCPI0_0:
-; CHECK-NEXT: .long 1065353216              ## float 1.000000e+00
-; CHECK-NEXT: .long 1065353216              ## float 1.000000e+00
-; CHECK-NEXT: .long 1065353216              ## float 1.000000e+00
-; CHECK-NEXT: .long 1065353216              ## float 1.000000e+00
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
 ; CHECK-LABEL: foo:
 ; CHECK: cmpeqps %xmm1, %xmm0
 ; CHECK-NEXT: andps LCPI0_0(%rip), %xmm0
@@ -17,16 +17,69 @@ define <4 x float> @foo(<4 x float> %val, <4 x float> %test) nounwind {
   ret <4 x float> %result
 }
 
-define void @bar(<4 x float>* noalias %result) nounwind {
+; Make sure the operation doesn't try to get folded when the sizes don't match,
+; as that ends up crashing later when trying to form a bitcast operation for
+; the folded nodes.
+define void @foo1(<4 x float> %val, <4 x float> %test, <4 x double>* %p) nounwind {
 ; CHECK-LABEL: LCPI1_0:
+; CHECK-NEXT: .long 1                       ## 0x1
+; CHECK-NEXT: .long 1                       ## 0x1
+; CHECK-NEXT: .long 1                       ## 0x1
+; CHECK-NEXT: .long 1                       ## 0x1
+; CHECK-LABEL: foo1:
+; CHECK: cvtdq2pd
+; CHECK: cvtdq2pd
+  %cmp = fcmp oeq <4 x float> %val, %test
+  %ext = zext <4 x i1> %cmp to <4 x i32>
+  %result = sitofp <4 x i32> %ext to <4 x double>
+  store <4 x double> %result, <4 x double>* %p
+  ret void
+}
+
+; Also test the general purpose constant folding of int->fp.
+define void @foo2(<4 x float>* noalias %result) nounwind {
+; CHECK-LABEL: LCPI2_0:
 ; CHECK-NEXT: .long 1082130432              ## float 4.000000e+00
 ; CHECK-NEXT: .long 1084227584              ## float 5.000000e+00
 ; CHECK-NEXT: .long 1086324736              ## float 6.000000e+00
 ; CHECK-NEXT: .long 1088421888              ## float 7.000000e+00
-; CHECK-LABEL: bar:
-; CHECK:  movaps LCPI1_0(%rip), %xmm0
+; CHECK-LABEL: foo2:
+; CHECK:  movaps LCPI2_0(%rip), %xmm0
 
   %val = uitofp <4 x i32> <i32 4, i32 5, i32 6, i32 7> to <4 x float>
   store <4 x float> %val, <4 x float>* %result
   ret void
 }
+
+; Fold explicit AND operations when the constant isn't a splat of a single
+; scalar value like what the zext creates.
+define <4 x float> @foo3(<4 x float> %val, <4 x float> %test) nounwind {
+; CHECK-LABEL: LCPI3_0:
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
+; CHECK-NEXT: .long 0                       ## 0x0
+; CHECK-NEXT: .long 1065353216              ## 0x3f800000
+; CHECK-NEXT: .long 0                       ## 0x0
+; CHECK-LABEL: foo3:
+; CHECK: cmpeqps %xmm1, %xmm0
+; CHECK-NEXT: andps LCPI3_0(%rip), %xmm0
+  %cmp = fcmp oeq <4 x float> %val, %test
+  %ext = zext <4 x i1> %cmp to <4 x i32>
+  %and = and <4 x i32> %ext, <i32 255, i32 256, i32 257, i32 258>
+  %result = sitofp <4 x i32> %and to <4 x float>
+  ret <4 x float> %result
+}
+
+; Test the general purpose constant folding of uint->fp.
+define void @foo4(<4 x float>* noalias %result) nounwind {
+; CHECK-LABEL: LCPI4_0:
+; CHECK-NEXT: .long 1065353216              ## float 1.000000e+00
+; CHECK-NEXT: .long 1123942400              ## float 1.270000e+02
+; CHECK-NEXT: .long 1124073472              ## float 1.280000e+02
+; CHECK-NEXT: .long 1132396544              ## float 2.550000e+02
+; CHECK-LABEL: foo4:
+; CHECK:  movaps LCPI4_0(%rip), %xmm0
+
+  %val = uitofp <4 x i8> <i8 1, i8 127, i8 -128, i8 -1> to <4 x float>
+  store <4 x float> %val, <4 x float>* %result
+  ret void
+}