[RISCV] Implement the implications of C extension #132259
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
llvmbot
added
clang
|
@llvm/pr-subscribers-mc @llvm/pr-subscribers-backend-risc-v Author: Jesse Huang (jaidTw) ChangesImplement the following implications according to the [Zc spec](https://github.com/riscvarchive/riscv-code-size-reduction/blob/main/Zc-specification/Zc.adoc#13-c) > As C defines the same instructions as Zca, Zcf and Zcd, the rule is that: Patch is 27.76 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/132259.diff 12 Files Affected:
diff --git a/clang/test/CodeGen/RISCV/riscv-func-attr-target.c b/clang/test/CodeGen/RISCV/riscv-func-attr-target.c
index cd83876ec5f90..c5189d6aab28f 100644
--- a/clang/test/CodeGen/RISCV/riscv-func-attr-target.c
+++ b/clang/test/CodeGen/RISCV/riscv-func-attr-target.c
@@ -85,11 +85,11 @@ int test_vsetvlmax_e64m1() {
// CHECK: attributes #2 = { {{.*}}"target-features"="+64bit,+a,+m,+save-restore,+zaamo,+zalrsc,+zbb,+zifencei,+zmmul,-relax,-zfa" }
// CHECK: attributes #3 = { {{.*}}"target-features"="+64bit,+a,+d,+f,+m,+save-restore,+v,+zaamo,+zalrsc,+zbb,+zicond,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b,-relax,-zfa" }
// Make sure we append negative features if we override the arch
-// CHECK: attributes #4 = { {{.*}}"target-features"="+64bit,+a,+c,+d,+f,+m,+save-restore,+zaamo,+zalrsc,+zbb,+zicsr,+zifencei,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
+// CHECK: attributes #4 = { {{.*}}"target-features"="+64bit,+a,+c,+d,+f,+m,+save-restore,+zaamo,+zalrsc,+zbb,+zca,+zcd,+zicsr,+zifencei,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
// CHECK: attributes #5 = { {{.*}}"target-features"="+64bit,+m,+save-restore,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
// CHECK: attributes #6 = { {{.*}}"target-cpu"="sifive-u54" "target-features"="+64bit,+a,+m,+save-restore,+zaamo,+zalrsc,+zbb,+zifencei,+zmmul,-relax,-zfa" }
// CHECK: attributes #7 = { {{.*}}"target-cpu"="sifive-u54" "target-features"="+64bit,+m,+save-restore,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
-// CHECK: attributes #8 = { {{.*}}"target-cpu"="sifive-u54" "target-features"="+64bit,+a,+c,+d,+f,+m,+save-restore,+zaamo,+zalrsc,+zicsr,+zifencei,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
+// CHECK: attributes #8 = { {{.*}}"target-cpu"="sifive-u54" "target-features"="+64bit,+a,+c,+d,+f,+m,+save-restore,+zaamo,+zalrsc,+zca,+zcd,+zicsr,+zifencei,+zmmul,{{(-[[:alnum:]-]+)(,-[[:alnum:]-]+)*}}" }
// CHECK: attributes #9 = { {{.*}}"target-features"="+64bit,+a,+m,+save-restore,+zaamo,+zalrsc,+zicsr,+zifencei,+zmmul,+zve32x,+zvl32b,-relax,-zbb,-zfa" }
// CHECK: attributes #11 = { {{.*}}"target-features"="+64bit,+a,+f,+m,+save-restore,+zaamo,+zalrsc,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zvl32b,-relax,-zbb,-zfa" }
// CHECK: attributes #12 = { {{.*}}"target-features"="+64bit,+a,+d,+f,+m,+save-restore,+zaamo,+zalrsc,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl32b,+zvl64b,-relax,-zbb,-zfa" }
diff --git a/clang/test/CodeGen/attr-target-clones-riscv.c b/clang/test/CodeGen/attr-target-clones-riscv.c
index 2e8018c707d96..642302ba9d229 100644
--- a/clang/test/CodeGen/attr-target-clones-riscv.c
+++ b/clang/test/CodeGen/attr-target-clones-riscv.c
@@ -370,7 +370,7 @@ int bar() { return foo1() + foo2() + foo3() + foo4() + foo5() + foo6() + foo7()
// CHECK: attributes #[[ATTR0]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i" }
// CHECK: attributes #[[ATTR1]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zmmul" }
// CHECK: attributes #[[ATTR2]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zbb" }
-// CHECK: attributes #[[ATTR3]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+zbb" }
+// CHECK: attributes #[[ATTR3]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+zbb,+zca" }
// CHECK: attributes #[[ATTR4]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+d,+f,+i,+v,+zbb,+zicsr,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b" }
// CHECK: attributes #[[ATTR5]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zvkt" }
// CHECK: attributes #[[ATTR6]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zba" }
diff --git a/clang/test/CodeGen/attr-target-version-riscv.c b/clang/test/CodeGen/attr-target-version-riscv.c
index 362b9ad323652..3eff52a7c7710 100644
--- a/clang/test/CodeGen/attr-target-version-riscv.c
+++ b/clang/test/CodeGen/attr-target-version-riscv.c
@@ -371,7 +371,7 @@ int bar() { return foo1() + foo2() + foo3() + foo4() + foo5() + foo6() + foo7();
// CHECK: attributes #[[ATTR1]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i" }
// CHECK: attributes #[[ATTR2]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zbb" }
// CHECK: attributes #[[ATTR3]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zmmul" }
-// CHECK: attributes #[[ATTR4]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+zbb" }
+// CHECK: attributes #[[ATTR4]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+zbb,+zca" }
// CHECK: attributes #[[ATTR5]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zba" }
// CHECK: attributes #[[ATTR6]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+zba,+zbb" }
//.
diff --git a/clang/test/CodeGenCXX/attr-target-clones-riscv.cpp b/clang/test/CodeGenCXX/attr-target-clones-riscv.cpp
index 13a0226ce5415..7e57b1437e2e1 100644
--- a/clang/test/CodeGenCXX/attr-target-clones-riscv.cpp
+++ b/clang/test/CodeGenCXX/attr-target-clones-riscv.cpp
@@ -368,7 +368,7 @@ int bar() { return foo1() + foo2() + foo3() + foo4() + foo5()+ foo6() + foo7() +
//.
// CHECK: attributes #[[ATTR0]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zmmul" }
// CHECK: attributes #[[ATTR1]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zbb,+zmmul" }
-// CHECK: attributes #[[ATTR2]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+m,+zbb,+zmmul" }
+// CHECK: attributes #[[ATTR2]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+m,+zbb,+zca,+zmmul" }
// CHECK: attributes #[[ATTR3]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+d,+f,+i,+m,+v,+zbb,+zicsr,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b" }
// CHECK: attributes #[[ATTR4]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zmmul,+zvkt" }
// CHECK: attributes #[[ATTR5]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zba,+zmmul" }
diff --git a/clang/test/CodeGenCXX/attr-target-version-riscv.cpp b/clang/test/CodeGenCXX/attr-target-version-riscv.cpp
index 51fae0902ab76..827cd1ef9750c 100644
--- a/clang/test/CodeGenCXX/attr-target-version-riscv.cpp
+++ b/clang/test/CodeGenCXX/attr-target-version-riscv.cpp
@@ -362,7 +362,7 @@ int bar() { return foo1() + foo2() + foo3(); }
// CHECK: attributes #[[ATTR0]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+d,+f,+i,+m,+v,+zicsr,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b" }
// CHECK: attributes #[[ATTR1]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zmmul" }
// CHECK: attributes #[[ATTR2]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zbb,+zmmul" }
-// CHECK: attributes #[[ATTR3]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+m,+zbb,+zmmul" }
+// CHECK: attributes #[[ATTR3]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+c,+i,+m,+zbb,+zca,+zmmul" }
// CHECK: attributes #[[ATTR4]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zba,+zmmul" }
// CHECK: attributes #[[ATTR5]] = { mustprogress noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+64bit,+i,+m,+zba,+zbb,+zmmul" }
//.
diff --git a/llvm/lib/Target/RISCV/RISCVFeatures.td b/llvm/lib/Target/RISCV/RISCVFeatures.td
index f23a855e7049f..2c5378db7094f 100644
--- a/llvm/lib/Target/RISCV/RISCVFeatures.td
+++ b/llvm/lib/Target/RISCV/RISCVFeatures.td
@@ -358,14 +358,6 @@ def HasStdExtZhinx : Predicate<"Subtarget->hasStdExtZhinx()">,
def NoStdExtZhinx : Predicate<"!Subtarget->hasStdExtZhinx()">;
// Compressed Extensions
-
-def FeatureStdExtC
- : RISCVExtension<2, 0, "Compressed Instructions">,
- RISCVExtensionBitmask<0, 2>;
-def HasStdExtC : Predicate<"Subtarget->hasStdExtC()">,
- AssemblerPredicate<(all_of FeatureStdExtC),
- "'C' (Compressed Instructions)">;
-
def FeatureNoRVCHints
: SubtargetFeature<"no-rvc-hints", "EnableRVCHintInstrs", "false",
"Disable RVC Hint Instructions.">;
@@ -378,6 +370,14 @@ def FeatureStdExtZca
"part of the C extension, excluding compressed "
"floating point loads/stores">;
+def FeatureStdExtC
+ : RISCVExtension<2, 0, "Compressed Instructions", [FeatureStdExtZca]>,
+ RISCVExtensionBitmask<0, 2>;
+def HasStdExtC : Predicate<"Subtarget->hasStdExtC()">,
+ AssemblerPredicate<(all_of FeatureStdExtC),
+ "'C' (Compressed Instructions)">;
+
+
def HasStdExtCOrZca
: Predicate<"Subtarget->hasStdExtCOrZca()">,
AssemblerPredicate<(any_of FeatureStdExtC, FeatureStdExtZca),
diff --git a/llvm/lib/TargetParser/RISCVISAInfo.cpp b/llvm/lib/TargetParser/RISCVISAInfo.cpp
index 11d4b3746e94d..292890bf2eca9 100644
--- a/llvm/lib/TargetParser/RISCVISAInfo.cpp
+++ b/llvm/lib/TargetParser/RISCVISAInfo.cpp
@@ -856,6 +856,19 @@ void RISCVISAInfo::updateImplication() {
});
}
+ // Add Zcd if C and D are enabled.
+ if (Exts.count("c") && Exts.count("d") && !Exts.count("zcd")) {
+ auto Version = findDefaultVersion("zcd");
+ Exts["zcd"] = *Version;
+ }
+
+ // Add Zcf if C and F are enabled on RV32.
+ if (XLen == 32 && Exts.count("c") && Exts.count("f") &&
+ !Exts.count("zcf")) {
+ auto Version = findDefaultVersion("zcf");
+ Exts["zcf"] = *Version;
+ }
+
// Add Zcf if Zce and F are enabled on RV32.
if (XLen == 32 && Exts.count("zce") && Exts.count("f") &&
!Exts.count("zcf")) {
diff --git a/llvm/test/CodeGen/RISCV/attributes.ll b/llvm/test/CodeGen/RISCV/attributes.ll
index 344438e554ce6..4b34870e598ed 100644
--- a/llvm/test/CodeGen/RISCV/attributes.ll
+++ b/llvm/test/CodeGen/RISCV/attributes.ll
@@ -9,6 +9,8 @@
; RUN: llc -mtriple=riscv32 -mattr=+f %s -o - | FileCheck --check-prefixes=CHECK,RV32F %s
; RUN: llc -mtriple=riscv32 -mattr=+d %s -o - | FileCheck --check-prefixes=CHECK,RV32D %s
; RUN: llc -mtriple=riscv32 -mattr=+c %s -o - | FileCheck --check-prefixes=CHECK,RV32C %s
+; RUN: llc -mtriple=riscv32 -mattr=+c,+f %s -o - | FileCheck --check-prefixes=CHECK,RV32CF %s
+; RUN: llc -mtriple=riscv32 -mattr=+c,+d %s -o - | FileCheck --check-prefixes=CHECK,RV32CD %s
; RUN: llc -mtriple=riscv32 -mattr=+zihintpause %s -o - | FileCheck --check-prefixes=CHECK,RV32ZIHINTPAUSE %s
; RUN: llc -mtriple=riscv32 -mattr=+zihintntl %s -o - | FileCheck --check-prefixes=CHECK,RV32ZIHINTNTL %s
; RUN: llc -mtriple=riscv32 -mattr=+zfhmin %s -o - | FileCheck --check-prefixes=CHECK,RV32ZFHMIN %s
@@ -171,6 +173,8 @@
; RUN: llc -mtriple=riscv64 -mattr=+f %s -o - | FileCheck --check-prefixes=CHECK,RV64F %s
; RUN: llc -mtriple=riscv64 -mattr=+d %s -o - | FileCheck --check-prefixes=CHECK,RV64D %s
; RUN: llc -mtriple=riscv64 -mattr=+c %s -o - | FileCheck --check-prefixes=CHECK,RV64C %s
+; RUN: llc -mtriple=riscv64 -mattr=+c,+f %s -o - | FileCheck --check-prefixes=CHECK,RV64CF %s
+; RUN: llc -mtriple=riscv64 -mattr=+c,+d %s -o - | FileCheck --check-prefixes=CHECK,RV64CD %s
; RUN: llc -mtriple=riscv64 -mattr=+zihintpause %s -o - | FileCheck --check-prefixes=CHECK,RV64ZIHINTPAUSE %s
; RUN: llc -mtriple=riscv64 -mattr=+zihintntl %s -o - | FileCheck --check-prefixes=CHECK,RV64ZIHINTNTL %s
; RUN: llc -mtriple=riscv64 -mattr=+zfhmin %s -o - | FileCheck --check-prefixes=CHECK,RV64ZFHMIN %s
@@ -335,7 +339,9 @@
; RV32B: .attribute 5, "rv32i2p1_b1p0_zba1p0_zbb1p0_zbs1p0"
; RV32F: .attribute 5, "rv32i2p1_f2p2_zicsr2p0"
; RV32D: .attribute 5, "rv32i2p1_f2p2_d2p2_zicsr2p0"
-; RV32C: .attribute 5, "rv32i2p1_c2p0"
+; RV32C: .attribute 5, "rv32i2p1_c2p0_zca1p0"
+; RV32CF: .attribute 5, "rv32i2p1_f2p2_c2p0_zicsr2p0_zca1p0_zcf1p0"
+; RV32CD: .attribute 5, "rv32i2p1_f2p2_d2p2_c2p0_zicsr2p0_zca1p0_zcd1p0_zcf1p0"
; RV32ZIHINTPAUSE: .attribute 5, "rv32i2p1_zihintpause2p0"
; RV32ZIHINTNTL: .attribute 5, "rv32i2p1_zihintntl1p0"
; RV32ZFHMIN: .attribute 5, "rv32i2p1_f2p2_zicsr2p0_zfhmin1p0"
@@ -494,7 +500,9 @@
; RV64B: .attribute 5, "rv64i2p1_b1p0_zba1p0_zbb1p0_zbs1p0"
; RV64F: .attribute 5, "rv64i2p1_f2p2_zicsr2p0"
; RV64D: .attribute 5, "rv64i2p1_f2p2_d2p2_zicsr2p0"
-; RV64C: .attribute 5, "rv64i2p1_c2p0"
+; RV64C: .attribute 5, "rv64i2p1_c2p0_zca1p0"
+; RV64CF: .attribute 5, "rv64i2p1_f2p2_c2p0_zicsr2p0_zca1p0"
+; RV64CD: .attribute 5, "rv64i2p1_f2p2_d2p2_c2p0_zicsr2p0_zca1p0_zcd1p0"
; RV64ZIHINTPAUSE: .attribute 5, "rv64i2p1_zihintpause2p0"
; RV64ZIHINTNTL: .attribute 5, "rv64i2p1_zihintntl1p0"
; RV64ZFHMIN: .attribute 5, "rv64i2p1_f2p2_zicsr2p0_zfhmin1p0"
@@ -639,14 +647,14 @@
; RVI20U32: .attribute 5, "rv32i2p1"
; RVI20U64: .attribute 5, "rv64i2p1"
-; RVA20U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zmmul1p0_za128rs1p0_zaamo1p0_zalrsc1p0"
-; RVA20S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zifencei2p0_zmmul1p0_za128rs1p0_zaamo1p0_zalrsc1p0_ssccptr1p0_sstvala1p0_sstvecd1p0_svade1p0_svbare1p0"
-; RVA22U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zihintpause2p0_zihpm2p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zfhmin1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0"
-; RVA22S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zifencei2p0_zihintpause2p0_zihpm2p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zfhmin1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_ssccptr1p0_sscounterenw1p0_sstvala1p0_sstvecd1p0_svade1p0_svbare1p0_svinval1p0_svpbmt1p0"
-; RVA23U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_v1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zfhmin1p0_zca1p0_zcb1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_zvbb1p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvfhmin1p0_zvkb1p0_zvkt1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0_supm1p0"
-; RVA23S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_v1p0_h1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zifencei2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zfhmin1p0_zca1p0_zcb1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_zvbb1p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvfhmin1p0_zvkb1p0_zvkt1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0_sha1p0_shcounterenw1p0_shgatpa1p0_shtvala1p0_shvsatpa1p0_shvstvala1p0_shvstvecd1p0_ssccptr1p0_sscofpmf1p0_sscounterenw1p0_ssnpm1p0_ssstateen1p0_sstc1p0_sstvala1p0_sstvecd1p0_ssu64xl1p0_supm1p0_svade1p0_svbare1p0_svinval1p0_svnapot1p0_svpbmt1p0"
-; RVB23U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zca1p0_zcb1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0"
-; RVB23S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zifencei2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zca1p0_zcb1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_ssccptr1p0_sscofpmf1p0_sscounterenw1p0_sstc1p0_sstvala1p0_sstvecd1p0_ssu64xl1p0_svade1p0_svbare1p0_svinval1p0_svnapot1p0_svpbmt1p0"
+; RVA20U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zmmul1p0_za128rs1p0_zaamo1p0_zalrsc1p0_zca1p0_zcd1p0"
+; RVA20S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zifencei2p0_zmmul1p0_za128rs1p0_zaamo1p0_zalrsc1p0_zca1p0_zcd1p0_ssccptr1p0_sstvala1p0_sstvecd1p0_svade1p0_svbare1p0"
+; RVA22U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zihintpause2p0_zihpm2p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zfhmin1p0_zca1p0_zcd1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0"
+; RVA22S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicsr2p0_zifencei2p0_zihintpause2p0_zihpm2p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zfhmin1p0_zca1p0_zcd1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_ssccptr1p0_sscounterenw1p0_sstvala1p0_sstvecd1p0_svade1p0_svbare1p0_svinval1p0_svpbmt1p0"
+; RVA23U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_v1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zfhmin1p0_zca1p0_zcb1p0_zcd1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_zvbb1p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvfhmin1p0_zvkb1p0_zvkt1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0_supm1p0"
+; RVA23S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_v1p0_h1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zifencei2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zfhmin1p0_zca1p0_zcb1p0_zcd1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0_zvbb1p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvfhmin1p0_zvkb1p0_zvkt1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0_sha1p0_shcounterenw1p0_shgatpa1p0_shtvala1p0_shvsatpa1p0_shvstvala1p0_shvstvecd1p0_ssccptr1p0_sscofpmf1p0_sscounterenw1p0_ssnpm1p0_ssstateen1p0_sstc1p0_sstvala1p0_sstvecd1p0_ssu64xl1p0_supm1p0_svade1p0_svbare1p0_svinval1p0_svnapot1p0_svpbmt1p0"
+; RVB23U64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr2p0_zihintntl1p0_zihintpause2p0_zihpm2p0_zimop1p0_zmmul1p0_za64rs1p0_zaamo1p0_zalrsc1p0_zawrs1p0_zfa1p0_zca1p0_zcb1p0_zcd1p0_zcmop1p0_zba1p0_zbb1p0_zbs1p0_zkt1p0"
+; RVB23S64: .attribute 5, "rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_b1p0_zic64b1p0_zicbom1p0_zicbop1p0_zicboz1p0_ziccamoa1p0_ziccif1p0_zicclsm1p0_ziccrse1p0_zicntr2p0_zicond1p0_zicsr...
[truncated]
|
You can test this locally with the following command:git-clang-format --diff d0d33d2b5ba3369d4a5586234181055935965e49 126ce19ab548e253403b1adb0bbf3a00e7993b0d --extensions c,cpp -- clang/test/CodeGen/RISCV/riscv-func-attr-target.c clang/test/CodeGen/attr-target-clones-riscv.c clang/test/CodeGen/attr-target-version-riscv.c clang/test/CodeGenCXX/attr-target-clones-riscv.cpp clang/test/CodeGenCXX/attr-target-version-riscv.cpp llvm/lib/TargetParser/RISCVISAInfo.cpp llvm/unittests/TargetParser/RISCVISAInfoTest.cppView the diff from clang-format here.diff --git a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
index bd117e8aa9..c66e9511ce 100644
--- a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
+++ b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
@@ -303,8 +303,10 @@ TEST(ParseArchString, AcceptsSupportedBaseISAsAndSetsXLenAndFLen) {
EXPECT_TRUE(ExtsRV64GCV.at("zicsr") == (RISCVISAUtils::ExtensionVersion{2, 0}));
EXPECT_TRUE(ExtsRV64GCV.at("zifencei") ==
(RISCVISAUtils::ExtensionVersion{2, 0}));
- EXPECT_TRUE(ExtsRV64GCV.at("zmmul") == (RISCVISAUtils::ExtensionVersion{1, 0}));
- EXPECT_TRUE(ExtsRV64GCV.at("zaamo") == (RISCVISAUtils::ExtensionVersion{1, 0}));
+ EXPECT_TRUE(ExtsRV64GCV.at("zmmul") ==
+ (RISCVISAUtils::ExtensionVersion{1, 0}));
+ EXPECT_TRUE(ExtsRV64GCV.at("zaamo") ==
+ (RISCVISAUtils::ExtensionVersion{1, 0}));
EXPECT_TRUE(ExtsRV64GCV.at("zalrsc") ==
(RISCVISAUtils::ExtensionVersion{1, 0}));
EXPECT_TRUE(ExtsRV64GCV.at("zca") == (RISCVISAUtils::ExtensionVersion{1, 0}));
|
topperc
reviewed
Mar 20, 2025
| # CHECK: .option arch, -c | ||
| .option arch, -c | ||
| # CHECK: .option arch, -c, -zca | ||
| .option arch, -c, -zca |
There was a problem hiding this comment.
Does just .opt arch, -zca work?
There was a problem hiding this comment.
I tried but failed, seems like both are required
There was a problem hiding this comment.
This is because your predicates need a little bit of work, I think
There was a problem hiding this comment.
I guess .opt arch, -zca won't work because C will implied zca back again?
There was a problem hiding this comment.
.opt arch, -zca should also remove C at the same time - it should remove zca and anything that requires/implies zca - or the architecture created would not be valid.
There was a problem hiding this comment.
Minus operation on .option arch is a rabbit hole I would say...but that's a separate issue from this PR we could discuss in next week I think.
There was a problem hiding this comment.
The code for removing a feature doesn't even try to remove dependent features.
assert(Type == RISCVOptionArchArgType::Minus);
// It is invalid to disable an extension that there are other enabled
// extensions depend on it.
// TODO: Make use of RISCVISAInfo to handle this
for (auto &Feature : RISCVFeatureKV) {
if (getSTI().hasFeature(Feature.Value) &&
Feature.Implies.test(Ext->Value))
return Error(Loc, Twine("can't disable ") + Ext->Key +
" extension; " + Feature.Key +
" extension requires " + Ext->Key +
" extension");
lenary
reviewed
Mar 20, 2025
Comment on lines
381
to
383
| def HasStdExtCOrZca | ||
| : Predicate<"Subtarget->hasStdExtCOrZca()">, | ||
| AssemblerPredicate<(any_of FeatureStdExtC, FeatureStdExtZca), |
There was a problem hiding this comment.
I think this can be refactored now, as any time you have C you have Zca, so maybe this should just be HasStdExtZca
There was a problem hiding this comment.
I would like this to be done, but in a follow-up is ok. I think this might be the cause of some of the weird .arch behaviour.
There was a problem hiding this comment.
Thanks for the pointer, I will take a look on it
Comment on lines
865
to
870
| // Add Zcf if C and F are enabled on RV32. | ||
| if (XLen == 32 && Exts.count("c") && Exts.count("f") && | ||
| !Exts.count("zcf")) { | ||
| auto Version = findDefaultVersion("zcf"); | ||
| Exts["zcf"] = *Version; | ||
| } |
There was a problem hiding this comment.
I had concerns about this code for e.g. march=rv32idc, which should enable both zcf and zcd. Thankfully, the worklist processing will add f when d is specified, before this runs, so I don't think it's a problem.
| # CHECK: .option arch, -c | ||
| .option arch, -c | ||
| # CHECK: .option arch, -c, -zca | ||
| .option arch, -c, -zca |
There was a problem hiding this comment.
This is because your predicates need a little bit of work, I think
|
(Disclaimer: I am not intend to ignite the flames of war about the ISA string canonicalization!) Give few more background behind the PR, the issue we want to resolve is the multilib issue: we starting using In my mind there is a best way to fix that: let c implied
|
|
@kito-cheng so why couldn't toolchains update their multilib configuration now so that the behaviour is the same for these cases? If someone now has a |
|
RISC-V multilib selection is using a customized way to pick (detail see #73765), it will pick most suitable but compatible one. Give an example: multilib = rv32imac/ilp32, rv32imac_zba_zbb/ilp32 and now we are trying compile stuffs with OK, back to the C and Zca story there. multilib = rv32ima_zca/ilp32 , rv32imac_zba/ilp32 and build a program with However the situation will be fixed once we add implication Of cause we can fix the multilib situation by adding more rule, but I would strongly suggest let it relay on the current mechanism if possible, rather than adding more and more special match/compatible rule. And you could imagine, using traditional way to handle multilib without that mechanism means...we may need to enumerate terrible number of multilib rule. NOTE: The matching rule is match what RISC-V GCC do now. |
wangpc-pp
approved these changes
Mar 21, 2025
lenary
approved these changes
Mar 21, 2025
Comment on lines
381
to
383
| def HasStdExtCOrZca | ||
| : Predicate<"Subtarget->hasStdExtCOrZca()">, | ||
| AssemblerPredicate<(any_of FeatureStdExtC, FeatureStdExtZca), |
There was a problem hiding this comment.
I would like this to be done, but in a follow-up is ok. I think this might be the cause of some of the weird .arch behaviour.
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/153/builds/26585 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/14962 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/60/builds/22785 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/55/builds/8811 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/33/builds/13582 Here is the relevant piece of the build log for the reference |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Implement the following implications according to the Zc spec