Add the __ARM_ARCH_EXT_IDIV__ predefine. It is set to 1 if we have hardware divide in the mode that we are compiling in (depending on the target features), not defined if we don't. Should be compatible with the GCC conterpart. Also adding a -hwdiv option to overide the default behavior.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193074 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 2f90e98..f5249e5 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -3599,6 +3599,12 @@
NeonFPU = (1 << 3)
};
+ // Possible HWDiv features.
+ enum HWDivMode {
+ HWDivThumb = (1 << 0),
+ HWDivARM = (1 << 1)
+ };
+
static bool FPUModeIsVFP(FPUMode Mode) {
return Mode & (VFP2FPU | VFP3FPU | VFP4FPU | NeonFPU);
}
@@ -3618,6 +3624,7 @@
unsigned IsAAPCS : 1;
unsigned IsThumb : 1;
+ unsigned HWDiv : 2;
// Initialized via features.
unsigned SoftFloat : 1;
@@ -3770,6 +3777,7 @@
DiagnosticsEngine &Diags) {
FPU = 0;
SoftFloat = SoftFloatABI = false;
+ HWDiv = 0;
for (unsigned i = 0, e = Features.size(); i != e; ++i) {
if (Features[i] == "+soft-float")
SoftFloat = true;
@@ -3783,6 +3791,10 @@
FPU |= VFP4FPU;
else if (Features[i] == "+neon")
FPU |= NeonFPU;
+ else if (Features[i] == "+hwdiv")
+ HWDiv |= HWDivThumb;
+ else if (Features[i] == "+hwdiv-arm")
+ HWDiv |= HWDivARM;
}
if (!(FPU & NeonFPU) && FPMath == FP_Neon) {
@@ -3812,6 +3824,8 @@
.Case("softfloat", SoftFloat)
.Case("thumb", IsThumb)
.Case("neon", (FPU & NeonFPU) && !SoftFloat)
+ .Case("hwdiv", HWDiv & HWDivThumb)
+ .Case("hwdiv-arm", HWDiv & HWDivARM)
.Default(false);
}
// FIXME: Should we actually have some table instead of these switches?
@@ -3905,6 +3919,8 @@
if (CPUArch == "6T2" || IsARMv7)
Builder.defineMacro("__thumb2__");
}
+ if (((HWDiv & HWDivThumb) && IsThumb) || ((HWDiv & HWDivARM) && !IsThumb))
+ Builder.defineMacro("__ARM_ARCH_EXT_IDIV__", "1");
// Note, this is always on in gcc, even though it doesn't make sense.
Builder.defineMacro("__APCS_32__");