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clang-cl: Support the /fp options (PR23112) 

This hooks up the /fp options as aliases for -f[no-]fast-math and
-f[no]-trapping-math. It probably doesn't match cl.exe's behaviour
completely (e.g. LLVM is currently never as precise as /fp:precise),
but it's close enough.

Differential revision: http://reviews.llvm.org/D8909

llvm-svn: 234449
This commit is contained in:
Hans Wennborg 2015-04-08 22:55:09 +00:00
parent e5b064205a
commit 7a2e5c260c
2 changed files with 23 additions and 2 deletions
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6
clang/include/clang/Driver/CLCompatOptions.td
View File

@ -58,6 +58,11 @@ def _SLASH_c : CLFlag<"c">, HelpText<"Compile only">, Alias<c>;
def _SLASH_D : CLJoinedOrSeparate<"D">, HelpText<"Define macro">,
MetaVarName<"<macro[=value]>">, Alias<D>;
def _SLASH_E : CLFlag<"E">, HelpText<"Preprocess to stdout">, Alias<E>;
def _SLASH_fp_except : CLFlag<"fp:except">, HelpText<"">, Alias<ftrapping_math>;
def _SLASH_fp_except_ : CLFlag<"fp:except-">, HelpText<"">, Alias<fno_trapping_math>;
def _SLASH_fp_fast : CLFlag<"fp:fast">, HelpText<"">, Alias<ffast_math>;
def _SLASH_fp_precise : CLFlag<"fp:precise">, HelpText<"">, Alias<fno_fast_math>;
def _SLASH_fp_strict : CLFlag<"fp:strict">, HelpText<"">, Alias<fno_fast_math>;
def _SLASH_GR : CLFlag<"GR">, HelpText<"Enable emission of RTTI data">;
def _SLASH_GR_ : CLFlag<"GR-">, HelpText<"Disable emission of RTTI data">;
def _SLASH_GF_ : CLFlag<"GF-">, HelpText<"Disable string pooling">,
@ -257,7 +262,6 @@ def _SLASH_favor : CLJoined<"favor">;
def _SLASH_FC : CLFlag<"FC">;
def _SLASH_F : CLFlag<"F">;
def _SLASH_Fm : CLJoined<"Fm">;
def _SLASH_fp : CLJoined<"fp">;
def _SLASH_Fp : CLJoined<"Fp">;
def _SLASH_Fr : CLJoined<"Fr">;
def _SLASH_FR : CLJoined<"FR">;

19
clang/test/Driver/cl-options.c
View File

@ -30,6 +30,24 @@
// EP: "-P"
// EP: "-o" "-"
// RUN: %clang_cl /fp:fast /fp:except -### -- %s 2>&1 | FileCheck -check-prefix=fpexcept %s
// fpexcept-NOT: -menable-unsafe-fp-math
// RUN: %clang_cl /fp:fast /fp:except /fp:except- -### -- %s 2>&1 | FileCheck -check-prefix=fpexcept_ %s
// fpexcept_: -menable-unsafe-fp-math
// RUN: %clang_cl /fp:precise /fp:fast -### -- %s 2>&1 | FileCheck -check-prefix=fpfast %s
// fpfast: -menable-unsafe-fp-math
// fpfast: -ffast-math
// RUN: %clang_cl /fp:fast /fp:precise -### -- %s 2>&1 | FileCheck -check-prefix=fpprecise %s
// fpprecise-NOT: -menable-unsafe-fp-math
// fpprecise-NOT: -ffast-math
// RUN: %clang_cl /fp:fast /fp:strict -### -- %s 2>&1 | FileCheck -check-prefix=fpstrict %s
// fpstrict-NOT: -menable-unsafe-fp-math
// fpstrict-NOT: -ffast-math
// RTTI is on by default; just check that we don't error.
// RUN: %clang_cl /Zs /GR -- %s 2>&1
@ -243,7 +261,6 @@
// RUN: /Fifoo \
// RUN: /Fmfoo \
// RUN: /FpDebug\main.pch \
// RUN: /fp:precise \
// RUN: /Frfoo \
// RUN: /FRfoo \
// RUN: /FU foo \