[clang] 0268e12 - [PowerPC] swdiv_nochk Builtins for XL Compat
Kamau Bridgeman via cfe-commits
cfe-commits at lists.llvm.org
Mon Jul 19 14:51:24 PDT 2021
Author: Quinn Pham
Date: 2021-07-19T16:51:10-05:00
New Revision: 0268e123bea5bbfe64c625203cfe3b159e85b2dc
URL: https://github.com/llvm/llvm-project/commit/0268e123bea5bbfe64c625203cfe3b159e85b2dc
DIFF: https://github.com/llvm/llvm-project/commit/0268e123bea5bbfe64c625203cfe3b159e85b2dc.diff
LOG: [PowerPC] swdiv_nochk Builtins for XL Compat
This patch is in a series of patches to provide builtins for
compatibility with the XL compiler. This patch adds software divide
builtins with no checking. These builtins are each emitted as a fast
fdiv.
Reviewed By: #powerpc, nemanjai
Differential Revision: https://reviews.llvm.org/D106150
Added:
clang/test/CodeGen/builtins-ppc-xlcompat-swdiv_nochk.c
Modified:
clang/include/clang/Basic/BuiltinsPPC.def
clang/lib/Basic/Targets/PPC.cpp
clang/lib/CodeGen/CGBuiltin.cpp
Removed:
################################################################################
diff --git a/clang/include/clang/Basic/BuiltinsPPC.def b/clang/include/clang/Basic/BuiltinsPPC.def
index 1c83c59e1623..a3665e2a7754 100644
--- a/clang/include/clang/Basic/BuiltinsPPC.def
+++ b/clang/include/clang/Basic/BuiltinsPPC.def
@@ -73,6 +73,8 @@ BUILTIN(__builtin_ppc_fctiw, "dd", "")
BUILTIN(__builtin_ppc_fctiwz, "dd", "")
BUILTIN(__builtin_ppc_fctudz, "dd", "")
BUILTIN(__builtin_ppc_fctuwz, "dd", "")
+BUILTIN(__builtin_ppc_swdiv_nochk, "ddd", "")
+BUILTIN(__builtin_ppc_swdivs_nochk, "fff", "")
// Compare
BUILTIN(__builtin_ppc_cmpeqb, "LLiLLiLLi", "")
BUILTIN(__builtin_ppc_cmprb, "iCIiii", "")
diff --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
index 10af8494c44e..e22cbd8a13f7 100644
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -166,6 +166,8 @@ static void defineXLCompatMacros(MacroBuilder &Builder) {
Builder.defineMacro("__fnmsubs", "__builtin_ppc_fnmsubs");
Builder.defineMacro("__fre", "__builtin_ppc_fre");
Builder.defineMacro("__fres", "__builtin_ppc_fres");
+ Builder.defineMacro("__swdiv_nochk", "__builtin_ppc_swdiv_nochk");
+ Builder.defineMacro("__swdivs_nochk", "__builtin_ppc_swdivs_nochk");
}
/// PPCTargetInfo::getTargetDefines - Return a set of the PowerPC-specific
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 7e90751b2647..89e22ab75d4c 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -15629,6 +15629,15 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
llvm::Function *F = CGM.getIntrinsic(Intrinsic::ppc_mtfsf);
return Builder.CreateCall(F, {Ops[0], Cast}, "");
}
+
+ case PPC::BI__builtin_ppc_swdiv_nochk:
+ case PPC::BI__builtin_ppc_swdivs_nochk: {
+ FastMathFlags FMF = Builder.getFastMathFlags();
+ Builder.getFastMathFlags().setFast();
+ Value *FDiv = Builder.CreateFDiv(Ops[0], Ops[1], "swdiv_nochk");
+ Builder.getFastMathFlags() &= (FMF);
+ return FDiv;
+ }
}
}
diff --git a/clang/test/CodeGen/builtins-ppc-xlcompat-swdiv_nochk.c b/clang/test/CodeGen/builtins-ppc-xlcompat-swdiv_nochk.c
new file mode 100644
index 000000000000..63ce65b74d1b
--- /dev/null
+++ b/clang/test/CodeGen/builtins-ppc-xlcompat-swdiv_nochk.c
@@ -0,0 +1,100 @@
+// REQUIRES: powerpc-registered-target
+// RUN: %clang_cc1 -triple powerpc64-unknown-unknown \
+// RUN: -emit-llvm %s -o - -target-cpu pwr7 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc64-unknown-aix \
+// RUN: -emit-llvm %s -o - -target-cpu pwr7 | FileCheck %s
+
+extern double a;
+extern double b;
+extern double c;
+extern float d;
+extern float e;
+extern float f;
+
+// CHECK-LABEL: @test_swdiv_nochk(
+// CHECK: [[TMP0:%.*]] = load double, double* @a, align 8
+// CHECK-NEXT: [[TMP1:%.*]] = load double, double* @b, align 8
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast double [[TMP0]], [[TMP1]]
+// CHECK-NEXT: ret double [[SWDIV_NOCHK]]
+//
+double test_swdiv_nochk() {
+ return __swdiv_nochk(a, b);
+}
+
+// CHECK-LABEL: @test_swdivs_nochk(
+// CHECK: [[TMP0:%.*]] = load float, float* @d, align 4
+// CHECK-NEXT: [[TMP1:%.*]] = load float, float* @e, align 4
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast float [[TMP0]], [[TMP1]]
+// CHECK-NEXT: ret float [[SWDIV_NOCHK]]
+//
+float test_swdivs_nochk() {
+ return __swdivs_nochk(d, e);
+}
+
+// CHECK-LABEL: @test_flags_swdiv_nochk(
+// CHECK: [[TMP0:%.*]] = load double, double* @a, align 8
+// CHECK-NEXT: [[TMP1:%.*]] = load double, double* @b, align 8
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast double [[TMP0]], [[TMP1]]
+// CHECK-NEXT: [[TMP2:%.*]] = load double, double* @c, align 8
+// CHECK-NEXT: [[ADD:%.*]] = fadd double [[SWDIV_NOCHK]], [[TMP2]]
+// CHECK-NEXT: ret double [[ADD]]
+//
+double test_flags_swdiv_nochk() {
+ return __swdiv_nochk(a, b) + c;
+}
+
+// CHECK-LABEL: @test_flags_swdivs_nochk(
+// CHECK: [[TMP0:%.*]] = load float, float* @d, align 4
+// CHECK-NEXT: [[TMP1:%.*]] = load float, float* @e, align 4
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast float [[TMP0]], [[TMP1]]
+// CHECK-NEXT: [[TMP2:%.*]] = load float, float* @f, align 4
+// CHECK-NEXT: [[ADD:%.*]] = fadd float [[SWDIV_NOCHK]], [[TMP2]]
+// CHECK-NEXT: ret float [[ADD]]
+//
+float test_flags_swdivs_nochk() {
+ return __swdivs_nochk(d, e) + f;
+}
+
+// CHECK-LABEL: @test_builtin_ppc_swdiv_nochk(
+// CHECK: [[TMP0:%.*]] = load double, double* @a, align 8
+// CHECK-NEXT: [[TMP1:%.*]] = load double, double* @b, align 8
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast double [[TMP0]], [[TMP1]]
+// CHECK-NEXT: ret double [[SWDIV_NOCHK]]
+//
+double test_builtin_ppc_swdiv_nochk() {
+ return __builtin_ppc_swdiv_nochk(a, b);
+}
+
+// CHECK-LABEL: @test_builtin_ppc_swdivs_nochk(
+// CHECK: [[TMP0:%.*]] = load float, float* @d, align 4
+// CHECK-NEXT: [[TMP1:%.*]] = load float, float* @e, align 4
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast float [[TMP0]], [[TMP1]]
+// CHECK-NEXT: ret float [[SWDIV_NOCHK]]
+//
+float test_builtin_ppc_swdivs_nochk() {
+ return __builtin_ppc_swdivs_nochk(d, e);
+}
+
+// CHECK-LABEL: @test_flags_builtin_ppc_swdiv_nochk(
+// CHECK: [[TMP0:%.*]] = load double, double* @a, align 8
+// CHECK-NEXT: [[TMP1:%.*]] = load double, double* @b, align 8
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast double [[TMP0]], [[TMP1]]
+// CHECK-NEXT: [[TMP2:%.*]] = load double, double* @c, align 8
+// CHECK-NEXT: [[ADD:%.*]] = fadd double [[SWDIV_NOCHK]], [[TMP2]]
+// CHECK-NEXT: ret double [[ADD]]
+//
+double test_flags_builtin_ppc_swdiv_nochk() {
+ return __builtin_ppc_swdiv_nochk(a, b) + c;
+}
+
+// CHECK-LABEL: @test_flags_builtin_ppc_swdivs_nochk(
+// CHECK: [[TMP0:%.*]] = load float, float* @d, align 4
+// CHECK-NEXT: [[TMP1:%.*]] = load float, float* @e, align 4
+// CHECK-NEXT: [[SWDIV_NOCHK:%.*]] = fdiv fast float [[TMP0]], [[TMP1]]
+// CHECK-NEXT: [[TMP2:%.*]] = load float, float* @f, align 4
+// CHECK-NEXT: [[ADD:%.*]] = fadd float [[SWDIV_NOCHK]], [[TMP2]]
+// CHECK-NEXT: ret float [[ADD]]
+//
+float test_flags_builtin_ppc_swdivs_nochk() {
+ return __builtin_ppc_swdivs_nochk(d, e) + f;
+}
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