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[flang][AIX] Predefine __64BIT__ and _AIX macros #138591

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Merged
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May 7, 2025
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[flang][AIX] Predefine __64BIT__ and _AIX macros #138591

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17 changes: 12 additions & 5 deletions flang/lib/Frontend/CompilerInvocation.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1612,13 +1612,10 @@ void CompilerInvocation::setDefaultPredefinitions() {
}

llvm::Triple targetTriple{llvm::Triple(this->targetOpts.triple)};
if (targetTriple.isPPC()) {
// '__powerpc__' is a generic macro for any PowerPC cases. e.g. Max integer
// size.
fortranOptions.predefinitions.emplace_back("__powerpc__", "1");
}
if (targetTriple.isOSLinux()) {
fortranOptions.predefinitions.emplace_back("__linux__", "1");
} else if (targetTriple.isOSAIX()) {
fortranOptions.predefinitions.emplace_back("_AIX", "1");
}

switch (targetTriple.getArch()) {
Expand All @@ -1628,6 +1625,16 @@ void CompilerInvocation::setDefaultPredefinitions() {
fortranOptions.predefinitions.emplace_back("__x86_64__", "1");
fortranOptions.predefinitions.emplace_back("__x86_64", "1");
break;
case llvm::Triple::ArchType::ppc:
case llvm::Triple::ArchType::ppc64:
case llvm::Triple::ArchType::ppcle:
case llvm::Triple::ArchType::ppc64le:
// '__powerpc__' is a generic macro for any PowerPC.
fortranOptions.predefinitions.emplace_back("__powerpc__", "1");
if (targetTriple.isOSAIX() && targetTriple.isArch64Bit()) {
fortranOptions.predefinitions.emplace_back("__64BIT__", "1");
}
break;
}
}

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18 changes: 15 additions & 3 deletions flang/test/Driver/predefined-macros-powerpc2.f90
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Original file line number Diff line number Diff line change
@@ -1,13 +1,25 @@
! Test predefined macro for PowerPC architecture

! RUN: %flang_fc1 -triple ppc64le-unknown-linux -cpp -E %s | FileCheck %s
! RUN: %flang_fc1 -triple ppc64le-unknown-linux -cpp -E %s | FileCheck %s -check-prefix=CHECK-LINUX
! RUN: %flang_fc1 -triple powerpc-unknown-aix -cpp -E %s | FileCheck %s -check-prefix=CHECK-AIX32
! RUN: %flang_fc1 -triple powerpc64-unknown-aix -cpp -E %s | FileCheck %s -check-prefix=CHECK-AIX64
! REQUIRES: target=powerpc{{.*}}

! CHECK: integer :: var1 = 1
! CHECK: integer :: var2 = 1
! CHECK-LINUX: integer :: var1 = 1
! CHECK-LINUX: integer :: var2 = 1
! CHECK-AIX32: integer :: var1 = 1
! CHECK-AIX32: integer :: var2 = 1
! CHECK-AIX32: integer :: var3 = __64BIT__
! CHECK-AIX64: integer :: var1 = 1
! CHECK-AIX64: integer :: var2 = 1
! CHECK-AIX64: integer :: var3 = 1

#if defined(__linux__) && defined(__powerpc__)
integer :: var1 = __powerpc__
integer :: var2 = __linux__
#elif defined(_AIX) && defined(__powerpc__)
integer :: var1 = __powerpc__
integer :: var2 = _AIX
integer :: var3 = __64BIT__
#endif
end program