[PATCH] D138675: [flang] Add -ffast-math and -Ofast

[Amy Kwan via Phabricator via cfe-commits]

amyk added a comment.

Hi,

The ppc64le-flang-rhel-clang <https://lab.llvm.org/buildbot/#/builders/21> bot is also experiencing some failures with the `Driver/fast_math.f90` test case. In particular, `crtfastmath.o` is not found at all for `CHECK-CRT` as we can see in the failure details <https://lab.llvm.org/buildbot/#/builders/21/builds/57841/steps/6/logs/FAIL__Flang__fast_math_f90>.

  llvm-project/flang/test/Driver/fast_math.f90:64:19: error: CHECK-CRT-SAME: expected string not found in input
  ! CHECK-CRT-SAME: crtfastmath.o

The output for the `CHECK-CRT` line on the bot looks like the following:

  "/home/buildbots/ppc64le-flang-rhel-test/ppc64le-flang-rhel-clang-build/build/bin/flang-new" "-fc1" "-triple" "powerpc64le-unknown-linux-gnu" "-emit-obj" "-mrelocation-model" "pic" "-pic-level" "2" "-pic-is-pie" "-ffast-math" "-target-cpu" "ppc64le" "-o" "/tmp/lit-tmp-x_okwzug/fast_math-e9ab49.o" "-x" "f95-cpp-input" "/home/buildbots/ppc64le-flang-rhel-test/ppc64le-flang-rhel-clang-build/llvm-project/flang/test/Driver/fast_math.f90" 
  
  "/usr/bin/ld" "-pie" "--hash-style=gnu" "--eh-frame-hdr" "-m" "elf64lppc" "-dynamic-linker" "/lib64/ld64.so.2" "-o" "/home/buildbots/ppc64le-flang-rhel-test/ppc64le-flang-rhel-clang-build/build/tools/flang/test/Driver/Output/fast_math.f90.tmp" "/usr/lib/gcc/ppc64le-redhat-linux/8/../../../../lib64/Scrt1.o" "/usr/lib/gcc/ppc64le-redhat-linux/8/../../../../lib64/crti.o" "/usr/lib/gcc/ppc64le-redhat-linux/8/crtbeginS.o" "-L/usr/lib/gcc/ppc64le-redhat-linux/8" "-L/usr/lib/gcc/ppc64le-redhat-linux/8/../../../../lib64" "-L/lib/../lib64" "-L/usr/lib/../lib64" "-L/lib" "-L/usr/lib" "/tmp/lit-tmp-x_okwzug/fast_math-e9ab49.o" "-lFortran_main" "-lFortranRuntime" "-lFortranDecimal" "-lm" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "/usr/lib/gcc/ppc64le-redhat-linux/8/crtendS.o" "/usr/lib/gcc/ppc64le-redhat-linux/8/../../../../lib64/crtn.o"                                                                                        

Would it be possible to follow up with a fix for this test case?


Repository:
  rG LLVM Github Monorepo

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