Summary:
"ww" and "ws" are both constraint codes for VSX vector registers that
hold scalar double data. "ww" is preferred for float while "ws" is
preferred for double.
Reviewed By: jsji
Differential Revision: https://reviews.llvm.org/D64119
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365106
91177308-0d34-0410-b5e6-
96231b3b80d8
return C_RegisterClass;
} else if (Constraint == "wa" || Constraint == "wd" ||
Constraint == "wf" || Constraint == "ws" ||
- Constraint == "wi") {
+ Constraint == "wi" || Constraint == "ww") {
return C_RegisterClass; // VSX registers.
}
return TargetLowering::getConstraintType(Constraint);
StringRef(constraint) == "wf") &&
type->isVectorTy())
return CW_Register;
- else if (StringRef(constraint) == "ws" && type->isDoubleTy())
- return CW_Register;
else if (StringRef(constraint) == "wi" && type->isIntegerTy(64))
return CW_Register; // just hold 64-bit integers data.
+ else if (StringRef(constraint) == "ws" && type->isDoubleTy())
+ return CW_Register;
+ else if (StringRef(constraint) == "ww" && type->isFloatTy())
+ return CW_Register;
switch (*constraint) {
default:
Constraint == "wf" || Constraint == "wi") &&
Subtarget.hasVSX()) {
return std::make_pair(0U, &PPC::VSRCRegClass);
- } else if (Constraint == "ws" && Subtarget.hasVSX()) {
+ } else if ((Constraint == "ws" || Constraint == "ww") && Subtarget.hasVSX()) {
if (VT == MVT::f32 && Subtarget.hasP8Vector())
return std::make_pair(0U, &PPC::VSSRCRegClass);
else
; CHECK: mtvsrd v2, r1
; CHECK: #NO_APP
}
+
+define float @test_ww(float %x, float %y) {
+ %1 = tail call float asm "xsmaxdp ${0:x}, ${1:x}, ${2:x}", "=^ww,^ww,^ww"(float %x, float %y)
+ ret float %1
+; CHECK-LABEL: test_ww:
+; CHECK: #APP
+; CHECK: xsmaxdp f1, f1, f2
+; CHECK: #NO_APP
+}
; CHECK: error: couldn't allocate output register for constraint 'wi'
}
+define float @test_ww(float %x, float %y) #0 {
+ %1 = tail call float asm "xsmaxdp ${0:x},${1:x},${2:x}", "=^ww,^ww,^ww"(float %x, float %y) #0
+ ret float %1
+; CHECK: error: couldn't allocate output register for constraint 'ww'
+}
+
+define double @test_ws(double %x, double %y) #0 {
+ %1 = tail call double asm "xsmaxdp ${0:x},${1:x},${2:x}", "=^ws,^ws,^ws"(double %x, double %y) #0
+ ret double %1
+; CHECK: error: couldn't allocate output register for constraint 'ws'
+}
+
attributes #0 = { nounwind "target-features"="-vsx" }