Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

[compiler-rt][X86] Unify getAMDProcessorTypeAndSubType #97863

Merged
merged 4 commits into from
Jul 8, 2024
Merged

[compiler-rt][X86] Unify getAMDProcessorTypeAndSubType #97863

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
2be7a78
[compiler-rt][X86] Unify getAMDProcessorTypeAndSubType
boomanaiden154 Jul 5, 2024
e944346
Address feedback
boomanaiden154 Jul 7, 2024
880f659
Address feedback
boomanaiden154 Jul 8, 2024
3174ba6
Fix formatting
boomanaiden154 Jul 8, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
42 changes: 38 additions & 4 deletions compiler-rt/lib/builtins/cpu_model/x86.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -662,14 +662,48 @@ static const char *getAMDProcessorTypeAndSubtype(unsigned Family,
const unsigned *Features,
unsigned *Type,
unsigned *Subtype) {
// We select CPU strings to match the code in Host.cpp, but we don't use them
// in compiler-rt.
const char *CPU = 0;

switch (Family) {
case 4:
CPU = "i486";
break;
case 5:
CPU = "pentium";
switch (Model) {
case 6:
case 7:
CPU = "k6";
break;
case 8:
CPU = "k6-2";
break;
case 9:
case 13:
CPU = "k6-3";
break;
case 10:
CPU = "geode";
break;
}
break;
case 6:
if (testFeature(FEATURE_SSE)) {
CPU = "athlon-xp";
break;
}
CPU = "athlon";
break;
case 15:
if (testFeature(FEATURE_SSE3)) {
CPU = "k8-sse3";
break;
}
CPU = "k8";
break;
case 16:
CPU = "amdfam10";
*Type = AMDFAM10H;
*Type = AMDFAM10H; // "amdfam10"
switch (Model) {
case 2:
*Subtype = AMDFAM10H_BARCELONA;
Expand Down Expand Up @@ -745,7 +779,7 @@ static const char *getAMDProcessorTypeAndSubtype(unsigned Family,
case 25:
CPU = "znver3";
*Type = AMDFAM19H;
if ((Model <= 0x0f) || (Model >= 0x20 && Model <= 0x2f) ||
if (Model <= 0x0f || (Model >= 0x20 && Model <= 0x2f) ||
(Model >= 0x30 && Model <= 0x3f) || (Model >= 0x40 && Model <= 0x4f) ||
(Model >= 0x50 && Model <= 0x5f)) {
// Family 19h Models 00h-0Fh (Genesis, Chagall) Zen 3
Expand Down
21 changes: 8 additions & 13 deletions llvm/lib/TargetParser/Host.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -707,9 +707,7 @@ static StringRef
getIntelProcessorTypeAndSubtype(unsigned Family, unsigned Model,
const unsigned *Features,
unsigned *Type, unsigned *Subtype) {
auto testFeature = [&](unsigned F) {
return (Features[F / 32] & (1U << (F % 32))) != 0;
};
#define testFeature(F) (Features[F / 32] & (1 << (F % 32))) != 0
boomanaiden154 marked this conversation as resolved.
Show resolved Hide resolved

StringRef CPU;

Expand Down Expand Up @@ -1067,15 +1065,12 @@ getIntelProcessorTypeAndSubtype(unsigned Family, unsigned Model,
return CPU;
}

static StringRef
getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
const unsigned *Features,
unsigned *Type, unsigned *Subtype) {
auto testFeature = [&](unsigned F) {
return (Features[F / 32] & (1U << (F % 32))) != 0;
};

StringRef CPU;
static const char *getAMDProcessorTypeAndSubtype(unsigned Family,
unsigned Model,
const unsigned *Features,
unsigned *Type,
unsigned *Subtype) {
const char *CPU = 0;

switch (Family) {
case 4:
Expand Down Expand Up @@ -1215,7 +1210,7 @@ getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
*Subtype = X86::AMDFAM19H_ZNVER4;
break; // "znver4"
}
break;
break; // family 19h
default:
break; // Unknown AMD CPU.
}
Expand Down
Loading