[llvm] [TLI] Add support for lgamma libcall. (PR #114536)
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Fri Nov 1 06:26:02 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-analysis
Author: Kenji Mouri / 毛利 研二 (MouriNaruto)
<details>
<summary>Changes</summary>
This patch adds basic support for `lgamma`. Constant folding support will be submitted in a subsequent patch.
Related issue: https://github.com/llvm/llvm-project/issues/113804
Note: I'm sorry that I made a similar PR that I had created (https://github.com/llvm/llvm-project/pull/114343) recently because one of my friends, @<!-- -->fawdlstty, hopes me to help him solve that issue in private. I think it's a good time for me to practice again. I hope I can make this PR merged successfully without reverting.
I hope I can create PRs for different topics that I am interested in for the next time instead of solving friends' issues. I know this style PRs should be left to other people who want to participate in the LLVM for the first time.
I hope @<!-- -->arsenm and @<!-- -->c8ef can help me review the code.
Kenji Mouri
---
Full diff: https://github.com/llvm/llvm-project/pull/114536.diff
6 Files Affected:
- (modified) llvm/include/llvm/Analysis/TargetLibraryInfo.def (+15)
- (modified) llvm/lib/Analysis/TargetLibraryInfo.cpp (+2)
- (modified) llvm/lib/Transforms/Utils/BuildLibCalls.cpp (+3)
- (modified) llvm/test/Transforms/InferFunctionAttrs/annotate.ll (+9)
- (modified) llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml (+16-4)
- (modified) llvm/unittests/Analysis/TargetLibraryInfoTest.cpp (+3)
``````````diff
diff --git a/llvm/include/llvm/Analysis/TargetLibraryInfo.def b/llvm/include/llvm/Analysis/TargetLibraryInfo.def
index fd53a26ef8fc11..04d6aef56783d5 100644
--- a/llvm/include/llvm/Analysis/TargetLibraryInfo.def
+++ b/llvm/include/llvm/Analysis/TargetLibraryInfo.def
@@ -1726,6 +1726,21 @@ TLI_DEFINE_ENUM_INTERNAL(ldexpl)
TLI_DEFINE_STRING_INTERNAL("ldexpl")
TLI_DEFINE_SIG_INTERNAL(LDbl, LDbl, Int)
+/// double lgamma(double x);
+TLI_DEFINE_ENUM_INTERNAL(lgamma)
+TLI_DEFINE_STRING_INTERNAL("lgamma")
+TLI_DEFINE_SIG_INTERNAL(Dbl, Dbl)
+
+/// float lgammaf(float x);
+TLI_DEFINE_ENUM_INTERNAL(lgammaf)
+TLI_DEFINE_STRING_INTERNAL("lgammaf")
+TLI_DEFINE_SIG_INTERNAL(Flt, Flt)
+
+/// long double lgammal(long double x);
+TLI_DEFINE_ENUM_INTERNAL(lgammal)
+TLI_DEFINE_STRING_INTERNAL("lgammal")
+TLI_DEFINE_SIG_INTERNAL(LDbl, LDbl)
+
/// long long int llabs(long long int j);
TLI_DEFINE_ENUM_INTERNAL(llabs)
TLI_DEFINE_STRING_INTERNAL("llabs")
diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index 7f0b98ab3c1514..a54ab8c9966c3c 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -301,6 +301,7 @@ static void initializeLibCalls(TargetLibraryInfoImpl &TLI, const Triple &T,
TLI.setUnavailable(LibFunc_floorf);
TLI.setUnavailable(LibFunc_fmodf);
TLI.setUnavailable(LibFunc_hypotf);
+ TLI.setUnavailable(LibFunc_lgammaf);
TLI.setUnavailable(LibFunc_log10f);
TLI.setUnavailable(LibFunc_logf);
TLI.setUnavailable(LibFunc_modff);
@@ -334,6 +335,7 @@ static void initializeLibCalls(TargetLibraryInfoImpl &TLI, const Triple &T,
TLI.setUnavailable(LibFunc_frexpl);
TLI.setUnavailable(LibFunc_hypotl);
TLI.setUnavailable(LibFunc_ldexpl);
+ TLI.setUnavailable(LibFunc_lgammal);
TLI.setUnavailable(LibFunc_log10l);
TLI.setUnavailable(LibFunc_logl);
TLI.setUnavailable(LibFunc_modfl);
diff --git a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
index e039457f313b29..35001809daeecb 100644
--- a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -1221,6 +1221,9 @@ bool llvm::inferNonMandatoryLibFuncAttrs(Function &F,
case LibFunc_isascii:
case LibFunc_isdigit:
case LibFunc_labs:
+ case LibFunc_lgamma:
+ case LibFunc_lgammaf:
+ case LibFunc_lgammal:
case LibFunc_llabs:
case LibFunc_log:
case LibFunc_log10:
diff --git a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
index 452d90aa98d88d..e10e60f3a86763 100644
--- a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
+++ b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
@@ -619,6 +619,15 @@ declare float @ldexpf(float, i32)
; CHECK: declare x86_fp80 @ldexpl(x86_fp80, i32) [[NOFREE_WILLRETURN]]
declare x86_fp80 @ldexpl(x86_fp80, i32)
+; CHECK: declare double @lgamma(double) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare double @lgamma(double)
+
+; CHECK: declare float @lgammaf(float) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare float @lgammaf(float)
+
+; CHECK: declare x86_fp80 @lgammal(x86_fp80) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare x86_fp80 @lgammal(x86_fp80)
+
; CHECK: declare i64 @llabs(i64) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
declare i64 @llabs(i64)
diff --git a/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml b/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
index 6702725e4fc8a4..83e35b50c12920 100644
--- a/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
+++ b/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
@@ -34,7 +34,7 @@
#
# CHECK: << Total TLI yes SDK no: 18
# CHECK: >> Total TLI no SDK yes: 0
-# CHECK: == Total TLI yes SDK yes: 271
+# CHECK: == Total TLI yes SDK yes: 274
#
# WRONG_DETAIL: << TLI yes SDK no : '_ZdaPv' aka operator delete[](void*)
# WRONG_DETAIL: >> TLI no SDK yes: '_ZdaPvj' aka operator delete[](void*, unsigned int)
@@ -48,14 +48,14 @@
# WRONG_DETAIL: << TLI yes SDK no : 'fminimum_numl'
# WRONG_SUMMARY: << Total TLI yes SDK no: 19{{$}}
# WRONG_SUMMARY: >> Total TLI no SDK yes: 1{{$}}
-# WRONG_SUMMARY: == Total TLI yes SDK yes: 270
+# WRONG_SUMMARY: == Total TLI yes SDK yes: 273
#
## The -COUNT suffix doesn't care if there are too many matches, so check
## the exact count first; the two directives should add up to that.
## Yes, this means additions to TLI will fail this test, but the argument
## to -COUNT can't be an expression.
-# AVAIL: TLI knows 522 symbols, 289 available
-# AVAIL-COUNT-289: {{^}} available
+# AVAIL: TLI knows 525 symbols, 292 available
+# AVAIL-COUNT-292: {{^}} available
# AVAIL-NOT: {{^}} available
# UNAVAIL-COUNT-233: not available
# UNAVAIL-NOT: not available
@@ -634,6 +634,18 @@ DynamicSymbols:
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
+ - Name: lgamma
+ Type: STT_FUNC
+ Section: .text
+ Binding: STB_GLOBAL
+ - Name: lgammaf
+ Type: STT_FUNC
+ Section: .text
+ Binding: STB_GLOBAL
+ - Name: lgammal
+ Type: STT_FUNC
+ Section: .text
+ Binding: STB_GLOBAL
- Name: llabs
Type: STT_FUNC
Section: .text
diff --git a/llvm/unittests/Analysis/TargetLibraryInfoTest.cpp b/llvm/unittests/Analysis/TargetLibraryInfoTest.cpp
index 982d00c5d33593..34d8cae9ab3927 100644
--- a/llvm/unittests/Analysis/TargetLibraryInfoTest.cpp
+++ b/llvm/unittests/Analysis/TargetLibraryInfoTest.cpp
@@ -272,6 +272,9 @@ TEST_F(TargetLibraryInfoTest, ValidProto) {
"declare i32 @ilogb(double)\n"
"declare i32 @ilogbf(float)\n"
"declare i32 @ilogbl(x86_fp80)\n"
+ "declare double @lgamma(double)\n"
+ "declare float @lgammaf(float)\n"
+ "declare x86_fp80 @lgammal(x86_fp80)\n"
"declare double @logb(double)\n"
"declare float @logbf(float)\n"
"declare x86_fp80 @logbl(x86_fp80)\n"
``````````
</details>
https://github.com/llvm/llvm-project/pull/114536
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