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llvm-project/clang/test/Driver/clang_f_opts.c
Manoj Gupta da08f6ac16 [clang]: Add support for "-fno-delete-null-pointer-checks" 
Summary:
Support for this option is needed for building Linux kernel.
This is a very frequently requested feature by kernel developers.

More details : https://lkml.org/lkml/2018/4/4/601

GCC option description for -fdelete-null-pointer-checks:
This Assume that programs cannot safely dereference null pointers,
and that no code or data element resides at address zero.

-fno-delete-null-pointer-checks is the inverse of this implying that
null pointer dereferencing is not undefined.

This feature is implemented in as the function attribute
"null-pointer-is-valid"="true".
This CL only adds the attribute on the function.
It also strips "nonnull" attributes from function arguments but
keeps the related warnings unchanged.

Corresponding LLVM change rL336613 already updated the
optimizations to not treat null pointer dereferencing
as undefined if the attribute is present.

Reviewers: t.p.northover, efriedma, jyknight, chandlerc, rnk, srhines, void, george.burgess.iv

Reviewed By: jyknight

Subscribers: drinkcat, xbolva00, cfe-commits

Differential Revision: https://reviews.llvm.org/D47894

llvm-svn: 337433
2018-07-19 00:44:52 +00:00

534 lines
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// REQUIRES: clang-driver
// RUN: %clang -### -S -fasm -fblocks -fbuiltin -fno-math-errno -fcommon -fpascal-strings -fno-blocks -fno-builtin -fmath-errno -fno-common -fno-pascal-strings -fblocks -fbuiltin -fmath-errno -fcommon -fpascal-strings -fsplit-stack %s 2>&1 | FileCheck -check-prefix=CHECK-OPTIONS1 %s
// RUN: %clang -### -S -fasm -fblocks -fbuiltin -fno-math-errno -fcommon -fpascal-strings -fno-asm -fno-blocks -fno-builtin -fmath-errno -fno-common -fno-pascal-strings -fno-show-source-location -fshort-enums %s 2>&1 | FileCheck -check-prefix=CHECK-OPTIONS2 %s
// CHECK-OPTIONS1: -split-stacks
// CHECK-OPTIONS1: -fgnu-keywords
// CHECK-OPTIONS1: -fblocks
// CHECK-OPTIONS1: -fpascal-strings
// CHECK-OPTIONS2: -fmath-errno
// CHECK-OPTIONS2: -fno-gnu-keywords
// CHECK-OPTIONS2: -fno-builtin
// CHECK-OPTIONS2: -fshort-enums
// CHECK-OPTIONS2: -fno-common
// CHECK-OPTIONS2: -fno-show-source-location
// RUN: %clang -### -S -Wwrite-strings %s 2>&1 | FileCheck -check-prefix=WRITE-STRINGS1 %s
// WRITE-STRINGS1: -fconst-strings
// RUN: %clang -### -S -Wwrite-strings -Wno-write-strings %s 2>&1 | FileCheck -check-prefix=WRITE-STRINGS2 %s
// WRITE-STRINGS2-NOT: -fconst-strings
// RUN: %clang -### -S -Wwrite-strings -w %s 2>&1 | FileCheck -check-prefix=WRITE-STRINGS3 %s
// WRITE-STRINGS3-NOT: -fconst-strings
// RUN: %clang -### -x c++ -c %s 2>&1 | FileCheck -check-prefix=DEPRECATED-ON-CHECK %s
// RUN: %clang -### -x c++ -c -Wdeprecated %s 2>&1 | FileCheck -check-prefix=DEPRECATED-ON-CHECK %s
// RUN: %clang -### -x c++ -c -Wno-deprecated %s 2>&1 | FileCheck -check-prefix=DEPRECATED-OFF-CHECK %s
// RUN: %clang -### -x c++ -c -Wno-deprecated -Wdeprecated %s 2>&1 | FileCheck -check-prefix=DEPRECATED-ON-CHECK %s
// RUN: %clang -### -x c++ -c -w %s 2>&1 | FileCheck -check-prefix=DEPRECATED-ON-CHECK %s
// RUN: %clang -### -c %s 2>&1 | FileCheck -check-prefix=DEPRECATED-OFF-CHECK %s
// RUN: %clang -### -c -Wdeprecated %s 2>&1 | FileCheck -check-prefix=DEPRECATED-OFF-CHECK %s
// DEPRECATED-ON-CHECK: -fdeprecated-macro
// DEPRECATED-OFF-CHECK-NOT: -fdeprecated-macro
// RUN: %clang -### -S -ffp-contract=fast %s 2>&1 | FileCheck -check-prefix=FP-CONTRACT-FAST-CHECK %s
// RUN: %clang -### -S -ffast-math %s 2>&1 | FileCheck -check-prefix=FP-CONTRACT-FAST-CHECK %s
// RUN: %clang -### -S -ffp-contract=off %s 2>&1 | FileCheck -check-prefix=FP-CONTRACT-OFF-CHECK %s
// FP-CONTRACT-FAST-CHECK: -ffp-contract=fast
// FP-CONTRACT-OFF-CHECK: -ffp-contract=off
// RUN: %clang -### -S -funroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-UNROLL-LOOPS %s
// RUN: %clang -### -S -fno-unroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-NO-UNROLL-LOOPS %s
// RUN: %clang -### -S -fno-unroll-loops -funroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-UNROLL-LOOPS %s
// RUN: %clang -### -S -funroll-loops -fno-unroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-NO-UNROLL-LOOPS %s
// CHECK-UNROLL-LOOPS: "-funroll-loops"
// CHECK-NO-UNROLL-LOOPS: "-fno-unroll-loops"
// RUN: %clang -### -S -freroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-REROLL-LOOPS %s
// RUN: %clang -### -S -fno-reroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-NO-REROLL-LOOPS %s
// RUN: %clang -### -S -fno-reroll-loops -freroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-REROLL-LOOPS %s
// RUN: %clang -### -S -freroll-loops -fno-reroll-loops %s 2>&1 | FileCheck -check-prefix=CHECK-NO-REROLL-LOOPS %s
// CHECK-REROLL-LOOPS: "-freroll-loops"
// CHECK-NO-REROLL-LOOPS-NOT: "-freroll-loops"
// RUN: %clang -### -S -fprofile-sample-accurate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-SAMPLE-ACCURATE %s
// CHECK-PROFILE-SAMPLE-ACCURATE: "-fprofile-sample-accurate"
// RUN: %clang -### -S -fprofile-sample-use=%S/Inputs/file.prof %s 2>&1 | FileCheck -check-prefix=CHECK-SAMPLE-PROFILE %s
// CHECK-SAMPLE-PROFILE: "-fprofile-sample-use={{.*}}/file.prof"
// RUN: %clang -### -S -fauto-profile=%S/Inputs/file.prof %s 2>&1 | FileCheck -check-prefix=CHECK-AUTO-PROFILE %s
// CHECK-AUTO-PROFILE: "-fprofile-sample-use={{.*}}/file.prof"
// RUN: %clang -### -S -fauto-profile=%S/Inputs/file.prof -fno-profile-sample-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-AUTO-PROFILE %s
// RUN: %clang -### -S -fauto-profile=%S/Inputs/file.prof -fno-auto-profile %s 2>&1 | FileCheck -check-prefix=CHECK-NO-AUTO-PROFILE %s
// CHECK-NO-AUTO-PROFILE-NOT: "-fprofile-sample-use={{.*}}/file.prof"
// RUN: %clang -### -S -fauto-profile=%S/Inputs/file.prof -fno-profile-sample-use -fauto-profile %s 2>&1 | FileCheck -check-prefix=CHECK-AUTO-PROFILE %s
// RUN: %clang -### -S -fauto-profile=%S/Inputs/file.prof -fno-auto-profile -fprofile-sample-use %s 2>&1 | FileCheck -check-prefix=CHECK-AUTO-PROFILE %s
// RUN: %clang -### -S -fprofile-arcs %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-ARCS %s
// RUN: %clang -### -S -fno-profile-arcs -fprofile-arcs %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-ARCS %s
// RUN: %clang -### -S -fno-profile-arcs %s 2>&1 | FileCheck -check-prefix=CHECK-NO-PROFILE-ARCS %s
// RUN: %clang -### -S -fprofile-arcs -fno-profile-arcs %s 2>&1 | FileCheck -check-prefix=CHECK-NO-PROFILE-ARCS %s
// CHECK-PROFILE-ARCS: "-femit-coverage-data"
// CHECK-NO-PROFILE-ARCS-NOT: "-femit-coverage-data"
// RUN: %clang -### -S -fprofile-dir=abc %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DIR-UNUSED %s
// RUN: %clang -### -S -ftest-coverage -fprofile-dir=abc %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DIR-UNUSED %s
// RUN: %clang -### -S -fprofile-arcs -fprofile-dir=abc %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DIR %s
// RUN: %clang -### -S --coverage -fprofile-dir=abc %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DIR %s
// RUN: %clang -### -S -fprofile-arcs -fno-profile-arcs -fprofile-dir=abc %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DIR-NEITHER %s
// CHECK-PROFILE-DIR: "-coverage-data-file" "abc
// CHECK-PROFILE-DIR-UNUSED: argument unused
// CHECK-PROFILE-DIR-UNUSED-NOT: "-coverage-data-file" "abc
// CHECK-PROFILE-DIR-NEITHER-NOT: argument unused
// RUN: %clang -### -S -fprofile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-LLVM %s
// RUN: %clang -### -S -fprofile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE %s
// RUN: %clang -### -S -fprofile-generate=/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-DIR %s
// RUN: %clang -### -S -fprofile-instr-generate=/tmp/somefile.profraw %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-FILE %s
// RUN: %clang -### -S -fprofile-generate -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate=dir -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate=dir -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
// RUN: %clang -### -S -fprofile-instr-generate=file -fno-profile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GENERATE %s
// RUN: %clang -### -S -fprofile-instr-generate -fprofile-generate=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GENERATE %s
// RUN: %clang -### -S -fprofile-generate=dir -fno-profile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-GEN %s
// RUN: %clang -### -S -fprofile-instr-use=file -fno-profile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
// RUN: %clang -### -S -fprofile-instr-use=file -fno-profile-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
// RUN: %clang -### -S -fprofile-use=file -fno-profile-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
// RUN: %clang -### -S -fprofile-use=file -fno-profile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-USE %s
// RUN: %clang -### -S -fcoverage-mapping %s 2>&1 | FileCheck -check-prefix=CHECK-COVERAGE-AND-GEN %s
// RUN: %clang -### -S -fcoverage-mapping -fno-coverage-mapping %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-COVERAGE %s
// RUN: %clang -### -S -fprofile-instr-generate -fcoverage-mapping -fno-coverage-mapping %s 2>&1 | FileCheck -check-prefix=CHECK-DISABLE-COVERAGE %s
// CHECK-PROFILE-GENERATE: "-fprofile-instrument=clang"
// CHECK-PROFILE-GENERATE-LLVM: "-fprofile-instrument=llvm"
// CHECK-PROFILE-GENERATE-DIR: "-fprofile-instrument-path=/some/dir{{/|\\\\}}{{.*}}"
// CHECK-PROFILE-GENERATE-FILE: "-fprofile-instrument-path=/tmp/somefile.profraw"
// CHECK-NO-MIX-GEN-USE: '{{[a-z=-]*}}' not allowed with '{{[a-z=-]*}}'
// CHECK-NO-MIX-GENERATE: '{{[a-z=-]*}}' not allowed with '{{[a-z=-]*}}'
// CHECK-DISABLE-GEN-NOT: "-fprofile-instrument=clang"
// CHECK-DISABLE-USE-NOT: "-fprofile-instr-use"
// CHECK-COVERAGE-AND-GEN: '-fcoverage-mapping' only allowed with '-fprofile-instr-generate'
// CHECK-DISABLE-COVERAGE-NOT: "-fcoverage-mapping"
// RUN: %clang -### -S -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
// RUN: %clang -### -S -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
// RUN: mkdir -p %t.d/some/dir
// RUN: %clang -### -S -fprofile-use=%t.d/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-DIR %s
// RUN: %clang -### -S -fprofile-instr-use=/tmp/somefile.prof %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-FILE %s
// CHECK-PROFILE-USE: "-fprofile-instrument-use-path=default.profdata"
// CHECK-PROFILE-USE-DIR: "-fprofile-instrument-use-path={{.*}}.d/some/dir{{/|\\\\}}default.profdata"
// CHECK-PROFILE-USE-FILE: "-fprofile-instrument-use-path=/tmp/somefile.prof"
// RUN: %clang -### -S -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -fno-vectorize -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -fno-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -fvectorize -fno-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -ftree-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -fno-tree-vectorize -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -fno-tree-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -ftree-vectorize -fno-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -O %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -fno-vectorize -O3 %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -O1 -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S -Ofast %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// RUN: %clang -### -S -Oz %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
// CHECK-VECTORIZE: "-vectorize-loops"
// CHECK-NO-VECTORIZE-NOT: "-vectorize-loops"
// RUN: %clang -### -S -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -fno-slp-vectorize -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -fslp-vectorize -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -ftree-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -fno-tree-slp-vectorize -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -fno-tree-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -ftree-slp-vectorize -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -O %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -Oz %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -fno-slp-vectorize -O3 %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -O1 -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S -Ofast %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// RUN: %clang -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
// CHECK-SLP-VECTORIZE: "-vectorize-slp"
// CHECK-NO-SLP-VECTORIZE-NOT: "-vectorize-slp"
// RUN: %clang -### -S -fextended-identifiers %s 2>&1 | FileCheck -check-prefix=CHECK-EXTENDED-IDENTIFIERS %s
// RUN: not %clang -### -S -fno-extended-identifiers %s 2>&1 | FileCheck -check-prefix=CHECK-NO-EXTENDED-IDENTIFIERS %s
// CHECK-EXTENDED-IDENTIFIERS: "-cc1"
// CHECK-EXTENDED-IDENTIFIERS-NOT: "-fextended-identifiers"
// CHECK-NO-EXTENDED-IDENTIFIERS: error: unsupported option '-fno-extended-identifiers'
// RUN: %clang -### -S -fno-pascal-strings -mpascal-strings %s 2>&1 | FileCheck -check-prefix=CHECK-M-PASCAL-STRINGS %s
// CHECK-M-PASCAL-STRINGS: "-fpascal-strings"
// RUN: %clang -### -S -fpascal-strings -mno-pascal-strings %s 2>&1 | FileCheck -check-prefix=CHECK-NO-M-PASCAL-STRINGS %s
// CHECK-NO-M-PASCAL-STRINGS-NOT: "-fpascal-strings"
// RUN: %clang -### -S -O4 %s 2>&1 | FileCheck -check-prefix=CHECK-MAX-O %s
// CHECK-MAX-O: warning: -O4 is equivalent to -O3
// CHECK-MAX-O: -O3
// RUN: %clang -S -O20 -o /dev/null %s 2>&1 | FileCheck -check-prefix=CHECK-INVALID-O %s
// CHECK-INVALID-O: warning: optimization level '-O20' is not supported; using '-O3' instead
// RUN: %clang -### -S -finput-charset=iso-8859-1 -o /dev/null %s 2>&1 | FileCheck -check-prefix=CHECK-INVALID-CHARSET %s
// CHECK-INVALID-CHARSET: error: invalid value 'iso-8859-1' in '-finput-charset=iso-8859-1'
// RUN: %clang -### -S -fexec-charset=iso-8859-1 -o /dev/null %s 2>&1 | FileCheck -check-prefix=CHECK-INVALID-INPUT-CHARSET %s
// CHECK-INVALID-INPUT-CHARSET: error: invalid value 'iso-8859-1' in '-fexec-charset=iso-8859-1'
// Test that we don't error on these.
// RUN: %clang -### -S -Werror \
// RUN: -falign-functions -falign-functions=2 -fno-align-functions \
// RUN: -fasynchronous-unwind-tables -fno-asynchronous-unwind-tables \
// RUN: -fbuiltin -fno-builtin \
// RUN: -fdiagnostics-show-location=once \
// RUN: -ffloat-store -fno-float-store \
// RUN: -feliminate-unused-debug-types -fno-eliminate-unused-debug-types \
// RUN: -fgcse -fno-gcse \
// RUN: -fident -fno-ident \
// RUN: -fimplicit-templates -fno-implicit-templates \
// RUN: -finput-charset=UTF-8 \
// RUN: -fexec-charset=UTF-8 \
// RUN: -fivopts -fno-ivopts \
// RUN: -fnon-call-exceptions -fno-non-call-exceptions \
// RUN: -fpermissive -fno-permissive \
// RUN: -fdefer-pop -fno-defer-pop \
// RUN: -fprefetch-loop-arrays -fno-prefetch-loop-arrays \
// RUN: -fprofile-correction -fno-profile-correction \
// RUN: -fprofile-values -fno-profile-values \
// RUN: -frounding-math -fno-rounding-math \
// RUN: -fsee -fno-see \
// RUN: -ftracer -fno-tracer \
// RUN: -funroll-all-loops -fno-unroll-all-loops \
// RUN: -fuse-ld=gold \
// RUN: -fno-builtin-foobar \
// RUN: -fno-builtin-strcat -fno-builtin-strcpy \
// RUN: -fno-var-tracking \
// RUN: -fno-unsigned-char \
// RUN: -fno-signed-char \
// RUN: -fstrength-reduce -fno-strength-reduce \
// RUN: -finline-limit=1000 \
// RUN: -finline-limit \
// RUN: -flto=1 \
// RUN: -falign-labels \
// RUN: -falign-labels=100 \
// RUN: -falign-loops \
// RUN: -falign-loops=100 \
// RUN: -falign-jumps \
// RUN: -falign-jumps=100 \
// RUN: -fexcess-precision=100 \
// RUN: -fbranch-count-reg \
// RUN: -fcaller-saves \
// RUN: -fno-default-inline -fdefault-inline \
// RUN: -fgcse-after-reload \
// RUN: -fgcse-las \
// RUN: -fgcse-sm \
// RUN: -fipa-cp \
// RUN: -finline-functions-called-once \
// RUN: -fmodulo-sched \
// RUN: -fmodulo-sched-allow-regmoves \
// RUN: -fpeel-loops \
// RUN: -frename-registers \
// RUN: -fschedule-insns2 \
// RUN: -fsingle-precision-constant \
// RUN: -ftree_loop_im \
// RUN: -ftree_loop_ivcanon \
// RUN: -ftree_loop_linear \
// RUN: -funsafe-loop-optimizations \
// RUN: -fuse-linker-plugin \
// RUN: -fvect-cost-model \
// RUN: -fvariable-expansion-in-unroller \
// RUN: -fweb \
// RUN: -fwhole-program \
// RUN: -fno-tree-dce -ftree-dce \
// RUN: -fno-tree-ter -ftree-ter \
// RUN: -fno-tree-vrp -ftree-vrp \
// RUN: -fno-delete-null-pointer-checks -fdelete-null-pointer-checks \
// RUN: -fno-inline-small-functions -finline-small-functions \
// RUN: -fno-fat-lto-objects -ffat-lto-objects \
// RUN: -fno-merge-constants -fmerge-constants \
// RUN: -fno-merge-all-constants -fmerge-all-constants \
// RUN: -fno-caller-saves -fcaller-saves \
// RUN: -fno-reorder-blocks -freorder-blocks \
// RUN: -fno-schedule-insns2 -fschedule-insns2 \
// RUN: -fno-stack-check \
// RUN: -fno-check-new -fcheck-new \
// RUN: -ffriend-injection \
// RUN: -fno-implement-inlines -fimplement-inlines \
// RUN: -fstack-check \
// RUN: -fforce-addr \
// RUN: -malign-functions=100 \
// RUN: -malign-loops=100 \
// RUN: -malign-jumps=100 \
// RUN: %s 2>&1 | FileCheck --check-prefix=IGNORE %s
// IGNORE-NOT: error: unknown argument
// Test that the warning is displayed on these.
// RUN: %clang -### \
// RUN: -finline-limit=1000 \
// RUN: -finline-limit \
// RUN: -fexpensive-optimizations \
// RUN: -fno-expensive-optimizations \
// RUN: -fno-defer-pop \
// RUN: -fkeep-inline-functions \
// RUN: -fno-keep-inline-functions \
// RUN: -freorder-blocks \
// RUN: -ffloat-store \
// RUN: -fgcse \
// RUN: -fivopts \
// RUN: -fprefetch-loop-arrays \
// RUN: -fprofile-correction \
// RUN: -fprofile-values \
// RUN: -frounding-math \
// RUN: -fschedule-insns \
// RUN: -fsignaling-nans \
// RUN: -fstrength-reduce \
// RUN: -ftracer \
// RUN: -funroll-all-loops \
// RUN: -funswitch-loops \
// RUN: -flto=1 \
// RUN: -falign-labels \
// RUN: -falign-labels=100 \
// RUN: -falign-loops \
// RUN: -falign-loops=100 \
// RUN: -falign-jumps \
// RUN: -falign-jumps=100 \
// RUN: -fexcess-precision=100 \
// RUN: -fbranch-count-reg \
// RUN: -fcaller-saves \
// RUN: -fno-default-inline \
// RUN: -fgcse-after-reload \
// RUN: -fgcse-las \
// RUN: -fgcse-sm \
// RUN: -fipa-cp \
// RUN: -finline-functions-called-once \
// RUN: -fmodulo-sched \
// RUN: -fmodulo-sched-allow-regmoves \
// RUN: -fpeel-loops \
// RUN: -frename-registers \
// RUN: -fschedule-insns2 \
// RUN: -fsingle-precision-constant \
// RUN: -ftree_loop_im \
// RUN: -ftree_loop_ivcanon \
// RUN: -ftree_loop_linear \
// RUN: -funsafe-loop-optimizations \
// RUN: -fuse-linker-plugin \
// RUN: -fvect-cost-model \
// RUN: -fvariable-expansion-in-unroller \
// RUN: -fweb \
// RUN: -fwhole-program \
// RUN: -fcaller-saves \
// RUN: -freorder-blocks \
// RUN: -ffat-lto-objects \
// RUN: -fmerge-constants \
// RUN: -finline-small-functions \
// RUN: -ftree-dce \
// RUN: -ftree-ter \
// RUN: -ftree-vrp \
// RUN: -fno-devirtualize \
// RUN: -fno-devirtualize-speculatively \
// RUN: -fslp-vectorize-aggressive \
// RUN: -fno-slp-vectorize-aggressive \
// RUN: %s 2>&1 | FileCheck --check-prefix=CHECK-WARNING %s
// CHECK-WARNING-DAG: optimization flag '-finline-limit=1000' is not supported
// CHECK-WARNING-DAG: optimization flag '-finline-limit' is not supported
// CHECK-WARNING-DAG: optimization flag '-fexpensive-optimizations' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-expensive-optimizations' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-defer-pop' is not supported
// CHECK-WARNING-DAG: optimization flag '-fkeep-inline-functions' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-keep-inline-functions' is not supported
// CHECK-WARNING-DAG: optimization flag '-freorder-blocks' is not supported
// CHECK-WARNING-DAG: optimization flag '-ffloat-store' is not supported
// CHECK-WARNING-DAG: optimization flag '-fgcse' is not supported
// CHECK-WARNING-DAG: optimization flag '-fivopts' is not supported
// CHECK-WARNING-DAG: optimization flag '-fprefetch-loop-arrays' is not supported
// CHECK-WARNING-DAG: optimization flag '-fprofile-correction' is not supported
// CHECK-WARNING-DAG: optimization flag '-fprofile-values' is not supported
// CHECK-WARNING-DAG: optimization flag '-frounding-math' is not supported
// CHECK-WARNING-DAG: optimization flag '-fschedule-insns' is not supported
// CHECK-WARNING-DAG: optimization flag '-fsignaling-nans' is not supported
// CHECK-WARNING-DAG: optimization flag '-fstrength-reduce' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftracer' is not supported
// CHECK-WARNING-DAG: optimization flag '-funroll-all-loops' is not supported
// CHECK-WARNING-DAG: optimization flag '-funswitch-loops' is not supported
// CHECK-WARNING-DAG: unsupported argument '1' to option 'flto='
// CHECK-WARNING-DAG: optimization flag '-falign-labels' is not supported
// CHECK-WARNING-DAG: optimization flag '-falign-labels=100' is not supported
// CHECK-WARNING-DAG: optimization flag '-falign-loops' is not supported
// CHECK-WARNING-DAG: optimization flag '-falign-loops=100' is not supported
// CHECK-WARNING-DAG: optimization flag '-falign-jumps' is not supported
// CHECK-WARNING-DAG: optimization flag '-falign-jumps=100' is not supported
// CHECK-WARNING-DAG: optimization flag '-fexcess-precision=100' is not supported
// CHECK-WARNING-DAG: optimization flag '-fbranch-count-reg' is not supported
// CHECK-WARNING-DAG: optimization flag '-fcaller-saves' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-default-inline' is not supported
// CHECK-WARNING-DAG: optimization flag '-fgcse-after-reload' is not supported
// CHECK-WARNING-DAG: optimization flag '-fgcse-las' is not supported
// CHECK-WARNING-DAG: optimization flag '-fgcse-sm' is not supported
// CHECK-WARNING-DAG: optimization flag '-fipa-cp' is not supported
// CHECK-WARNING-DAG: optimization flag '-finline-functions-called-once' is not supported
// CHECK-WARNING-DAG: optimization flag '-fmodulo-sched' is not supported
// CHECK-WARNING-DAG: optimization flag '-fmodulo-sched-allow-regmoves' is not supported
// CHECK-WARNING-DAG: optimization flag '-fpeel-loops' is not supported
// CHECK-WARNING-DAG: optimization flag '-frename-registers' is not supported
// CHECK-WARNING-DAG: optimization flag '-fschedule-insns2' is not supported
// CHECK-WARNING-DAG: optimization flag '-fsingle-precision-constant' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree_loop_im' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree_loop_ivcanon' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree_loop_linear' is not supported
// CHECK-WARNING-DAG: optimization flag '-funsafe-loop-optimizations' is not supported
// CHECK-WARNING-DAG: optimization flag '-fuse-linker-plugin' is not supported
// CHECK-WARNING-DAG: optimization flag '-fvect-cost-model' is not supported
// CHECK-WARNING-DAG: optimization flag '-fvariable-expansion-in-unroller' is not supported
// CHECK-WARNING-DAG: optimization flag '-fweb' is not supported
// CHECK-WARNING-DAG: optimization flag '-fwhole-program' is not supported
// CHECK-WARNING-DAG: optimization flag '-fcaller-saves' is not supported
// CHECK-WARNING-DAG: optimization flag '-freorder-blocks' is not supported
// CHECK-WARNING-DAG: optimization flag '-ffat-lto-objects' is not supported
// CHECK-WARNING-DAG: optimization flag '-fmerge-constants' is not supported
// CHECK-WARNING-DAG: optimization flag '-finline-small-functions' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree-dce' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree-ter' is not supported
// CHECK-WARNING-DAG: optimization flag '-ftree-vrp' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-devirtualize' is not supported
// CHECK-WARNING-DAG: optimization flag '-fno-devirtualize-speculatively' is not supported
// CHECK-WARNING-DAG: the flag '-fslp-vectorize-aggressive' has been deprecated and will be ignored
// CHECK-WARNING-DAG: the flag '-fno-slp-vectorize-aggressive' has been deprecated and will be ignored
// Test that we mute the warning on these
// RUN: %clang -### -finline-limit=1000 -Wno-invalid-command-line-argument \
// RUN: %s 2>&1 | FileCheck --check-prefix=CHECK-NO-WARNING1 %s
// RUN: %clang -### -finline-limit -Wno-invalid-command-line-argument \
// RUN: %s 2>&1 | FileCheck --check-prefix=CHECK-NO-WARNING2 %s
// RUN: %clang -### -finline-limit \
// RUN: -Winvalid-command-line-argument -Wno-ignored-optimization-argument \
// RUN: %s 2>&1 | FileCheck --check-prefix=CHECK-NO-WARNING2 %s
// CHECK-NO-WARNING1-NOT: optimization flag '-finline-limit=1000' is not supported
// CHECK-NO-WARNING2-NOT: optimization flag '-finline-limit' is not supported
// Test that an ignored optimization argument only prints 1 warning,
// not both a warning about not claiming the arg, *and* about not supporting
// the arg; and that adding -Wno-ignored-optimization silences the warning.
//
// RUN: %clang -### -fprofile-correction %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-WARNING3 %s
// CHECK-NO-WARNING3: optimization flag '-fprofile-correction' is not supported
// CHECK-NO-WARNING3-NOT: argument unused
// RUN: %clang -### -fprofile-correction -Wno-ignored-optimization-argument %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-WARNING4 %s
// CHECK-NO-WARNING4-NOT: not supported
// CHECK-NO-WARNING4-NOT: argument unused
// RUN: %clang -### -S -fsigned-char %s 2>&1 | FileCheck -check-prefix=CHAR-SIGN1 %s
// CHAR-SIGN1-NOT: -fno-signed-char
// RUN: %clang -### -S -funsigned-char %s 2>&1 | FileCheck -check-prefix=CHAR-SIGN2 %s
// CHAR-SIGN2: -fno-signed-char
// RUN: %clang -### -S -fno-signed-char %s 2>&1 | FileCheck -check-prefix=CHAR-SIGN3 %s
// CHAR-SIGN3: -fno-signed-char
// RUN: %clang -### -S -fno-unsigned-char %s 2>&1 | FileCheck -check-prefix=CHAR-SIGN4 %s
// CHAR-SIGN4-NOT: -fno-signed-char
// RUN: %clang -target x86_64-unknown-none-none -### -fshort-wchar -fno-short-wchar %s 2>&1 | FileCheck -check-prefix=CHECK-WCHAR1 -check-prefix=DELIMITERS %s
// RUN: %clang -target x86_64-unknown-none-none -### -fno-short-wchar -fshort-wchar %s 2>&1 | FileCheck -check-prefix=CHECK-WCHAR2 -check-prefix=DELIMITERS %s
// Make sure we don't match the -NOT lines with the linker invocation.
// Delimiters match the start of the cc1 and the start of the linker lines
// DELIMITERS: {{^ *"}}
// CHECK-WCHAR1: -fwchar-type=int
// CHECK-WCHAR1-NOT: -fwchar-type=short
// CHECK-WCHAR2: -fwchar-type=short
// CHECK-WCHAR2-NOT: -fwchar-type=int
// DELIMITERS: {{^ *"}}
// RUN: %clang -### -fno-experimental-new-pass-manager -fexperimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=CHECK-PM --check-prefix=CHECK-NEW-PM %s
// RUN: %clang -### -fexperimental-new-pass-manager -fno-experimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=CHECK-PM --check-prefix=CHECK-NO-NEW-PM %s
// CHECK-PM-NOT: argument unused
// CHECK-NEW-PM: -fexperimental-new-pass-manager
// CHECK-NEW-PM-NOT: -fno-experimental-new-pass-manager
// CHECK-NO-NEW-PM: -fno-experimental-new-pass-manager
// CHECK-NO-NEW-PM-NOT: -fexperimental-new-pass-manager
// RUN: %clang -### -S -fstrict-return %s 2>&1 | FileCheck -check-prefix=CHECK-STRICT-RETURN %s
// RUN: %clang -### -S -fno-strict-return %s 2>&1 | FileCheck -check-prefix=CHECK-NO-STRICT-RETURN %s
// CHECK-STRICT-RETURN-NOT: "-fno-strict-return"
// CHECK-NO-STRICT-RETURN: "-fno-strict-return"
// RUN: %clang -### -S -fno-debug-info-for-profiling -fdebug-info-for-profiling %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-DEBUG %s
// RUN: %clang -### -S -fdebug-info-for-profiling -fno-debug-info-for-profiling %s 2>&1 | FileCheck -check-prefix=CHECK-NO-PROFILE-DEBUG %s
// CHECK-PROFILE-DEBUG: -fdebug-info-for-profiling
// CHECK-NO-PROFILE-DEBUG-NOT: -fdebug-info-for-profiling
// RUN: %clang -### -S -fallow-editor-placeholders %s 2>&1 | FileCheck -check-prefix=CHECK-ALLOW-PLACEHOLDERS %s
// RUN: %clang -### -S -fno-allow-editor-placeholders %s 2>&1 | FileCheck -check-prefix=CHECK-NO-ALLOW-PLACEHOLDERS %s
// CHECK-ALLOW-PLACEHOLDERS: -fallow-editor-placeholders
// CHECK-NO-ALLOW-PLACEHOLDERS-NOT: -fallow-editor-placeholders
// RUN: %clang -### -target x86_64-unknown-windows-msvc -fno-short-wchar %s 2>&1 | FileCheck -check-prefix CHECK-WINDOWS-ISO10646 %s
// CHECK-WINDOWS-ISO10646: "-fwchar-type=int"
// CHECK-WINDOWS-ISO10646: "-fsigned-wchar"
// RUN: %clang -### -S -fcf-protection %s 2>&1 | FileCheck -check-prefix=CHECK-CF-PROTECTION-FULL %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-CF-PROTECTION-FULL %s
// RUN: %clang -### -S -fcf-protection=full %s 2>&1 | FileCheck -check-prefix=CHECK-CF-PROTECTION-FULL %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-CF-PROTECTION-FULL %s
// CHECK-CF-PROTECTION-FULL: -fcf-protection=full
// CHECK-NO-CF-PROTECTION-FULL-NOT: -fcf-protection=full
// RUN: %clang -### -S -fcf-protection=return %s 2>&1 | FileCheck -check-prefix=CHECK-CF-PROTECTION-RETURN %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-CF-PROTECTION-RETURN %s
// CHECK-CF-PROTECTION-RETURN: -fcf-protection=return
// CHECK-NO-CF-PROTECTION-RETURN-NOT: -fcf-protection=return
// RUN: %clang -### -S -fcf-protection=branch %s 2>&1 | FileCheck -check-prefix=CHECK-CF-PROTECTION-BRANCH %s
// RUN: %clang -### -S %s 2>&1 | FileCheck -check-prefix=CHECK-NO-CF-PROTECTION-BRANCH %s
// CHECK-CF-PROTECTION-BRANCH: -fcf-protection=branch
// CHECK-NO-CF-PROTECTION-BRANCH-NOT: -fcf-protection=branch
// RUN: %clang -### -S -fdiscard-value-names %s 2>&1 | FileCheck -check-prefix=CHECK-DISCARD-NAMES %s
// RUN: %clang -### -S -fno-discard-value-names %s 2>&1 | FileCheck -check-prefix=CHECK-NO-DISCARD-NAMES %s
// CHECK-DISCARD-NAMES: "-discard-value-names"
// CHECK-NO-DISCARD-NAMES-NOT: "-discard-value-names"
//
// RUN: %clang -### -S -fmerge-all-constants %s 2>&1 | FileCheck -check-prefix=CHECK-MERGE-ALL-CONSTANTS %s
// RUN: %clang -### -S -fno-merge-all-constants %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MERGE-ALL-CONSTANTS %s
// RUN: %clang -### -S -fmerge-all-constants -fno-merge-all-constants %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MERGE-ALL-CONSTANTS %s
// RUN: %clang -### -S -fno-merge-all-constants -fmerge-all-constants %s 2>&1 | FileCheck -check-prefix=CHECK-MERGE-ALL-CONSTANTS %s
// CHECK-NO-MERGE-ALL-CONSTANTS-NOT: "-fmerge-all-constants"
// CHECK-MERGE-ALL-CONSTANTS: "-fmerge-all-constants"
// RUN: %clang -### -S -fdelete-null-pointer-checks %s 2>&1 | FileCheck -check-prefix=CHECK-NULL-POINTER-CHECKS %s
// RUN: %clang -### -S -fno-delete-null-pointer-checks %s 2>&1 | FileCheck -check-prefix=CHECK-NO-NULL-POINTER-CHECKS %s
// RUN: %clang -### -S -fdelete-null-pointer-checks -fno-delete-null-pointer-checks %s 2>&1 | FileCheck -check-prefix=CHECK-NO-NULL-POINTER-CHECKS %s
// RUN: %clang -### -S -fno-delete-null-pointer-checks -fdelete-null-pointer-checks %s 2>&1 | FileCheck -check-prefix=CHECK-NULL-POINTER-CHECKS %s
// CHECK-NO-NULL-POINTER-CHECKS: "-fno-delete-null-pointer-checks"
// CHECK-NULL-POINTER-CHECKS-NOT: "-fno-delete-null-pointer-checks"
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