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[driver][mips] Adjust target triple accordingly to provided ABI name 

Explicitly selected MIPS ABI using the `-mabi` option implies
corresponding target triple. For 'O32' ABI it's a 32-bit target triple
like `mips-linux-gnu`. For 'N32' and 'N64' ABIs it's a 64-bit target
triple like `mips64-linux-gnu`. This patch adjusts target triple
accordingly these rules like we do for pseudo-target flags '-m64',
'-m32' etc already.

Differential revision: https://reviews.llvm.org/D52290

llvm-svn: 343169
This commit is contained in:
Simon Atanasyan 2018-09-27 05:04:50 +00:00
parent b441be0924
commit 0c0fb4b765
2 changed files with 35 additions and 0 deletions
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10
clang/lib/Driver/Driver.cpp
View File

@ -481,6 +481,16 @@ static llvm::Triple computeTargetTriple(const Driver &D,
Target.setVendorName("intel");
}
// If target is MIPS adjust the target triple
// accordingly to provided ABI name.
A = Args.getLastArg(options::OPT_mabi_EQ);
if (A && Target.isMIPS())
Target = llvm::StringSwitch<llvm::Triple>(A->getValue())
.Case("32", Target.get32BitArchVariant())
.Case("n32", Target.get64BitArchVariant())
.Case("64", Target.get64BitArchVariant())
.Default(Target);
return Target;
}

25
clang/test/Driver/mips-abi.c
View File

@ -162,3 +162,28 @@
// RUN: -march=unknown 2>&1 \
// RUN: | FileCheck -check-prefix=MIPS-ARCH-UNKNOWN %s
// MIPS-ARCH-UNKNOWN: error: unknown target CPU 'unknown'
// Check adjusting of target triple accordingly to `-mabi` option.
// RUN: %clang -target mips64-linux-gnu -mabi=32 -### %s 2>&1 \
// RUN: | FileCheck -check-prefix=TARGET-O32 %s
// TARGET-O32: "-triple" "mips-unknown-linux-gnu"
// TARGET-O32: "-target-cpu" "mips32r2"
// TARGET-O32: "-target-abi" "o32"
// TARGET-O32: ld{{.*}}"
// TARGET-O32: "-m" "elf32btsmip"
// RUN: %clang -target mips-linux-gnu -mabi=n32 -### %s 2>&1 \
// RUN: | FileCheck -check-prefix=TARGET-N32 %s
// TARGET-N32: "-triple" "mips64-unknown-linux-gnu"
// TARGET-N32: "-target-cpu" "mips64r2"
// TARGET-N32: "-target-abi" "n32"
// TARGET-N32: ld{{.*}}"
// TARGET-N32: "-m" "elf32btsmipn32"
// RUN: %clang -target mips-linux-gnu -mabi=64 -### %s 2>&1 \
// RUN: | FileCheck -check-prefix=TARGET-N64 %s
// TARGET-N64: "-triple" "mips64-unknown-linux-gnu"
// TARGET-N64: "-target-cpu" "mips64r2"
// TARGET-N64: "-target-abi" "n64"
// TARGET-N64: ld{{.*}}"
// TARGET-N64: "-m" "elf64btsmip"