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author | Ryan S. Arnold <rsa@us.ibm.com> | 2011-05-18 15:19:56 -0500 |
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committer | Ryan S. Arnold <rsa@us.ibm.com> | 2011-05-18 15:19:56 -0500 |
commit | 4749a0058b27274a95c5a798e339c7299cdf890e (patch) | |
tree | 53bd047458036251633acad8a7828352f0b225ad | |
parent | ba2d2313fbb29915b25c5e3e58e991deb61f85cb (diff) | |
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Prevent Altivec and VSX insns on PowerPC64 when no FPRs or VRs are avail.
-rw-r--r-- | ChangeLog | 6 | ||||
-rw-r--r-- | sysdeps/powerpc/powerpc64/Makefile | 7 |
2 files changed, 11 insertions, 2 deletions
@@ -1,3 +1,9 @@ +2011-05-18 Ryan S. Arnold <rsa@us.ibm.com> + + * sysdeps/powerpc/powerpc64/Makefile (no-special-regs): Add -mno-vsx + and -mno-altivec to prevent the compiler from using Altivec and/or + VSX instructions when the corresponding registers are not available. + 2011-02-11 Jakub Jelinek <jakub@redhat.com> * stdio-common/printf-parsemb.c (__parse_one_specmb): Handle diff --git a/sysdeps/powerpc/powerpc64/Makefile b/sysdeps/powerpc/powerpc64/Makefile index fe96aae4d4..4d9be6c73a 100644 --- a/sysdeps/powerpc/powerpc64/Makefile +++ b/sysdeps/powerpc/powerpc64/Makefile @@ -12,7 +12,10 @@ endif # These flags prevent FPU or Altivec registers from being used, # for code called in contexts that is not allowed to touch those registers. -# Stupid GCC requires us to pass all these ridiculous switches. +# Stupid GCC requires us to pass all these ridiculous switches. We need to +# pass the -mno-* switches as well to prevent the compiler from attempting +# to emit altivec or vsx instructions, especially when the registers aren't +# available. no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \ $(foreach m,2 3 4 5 6 7 8 9, \ 3$m 4$m 5$m),\ @@ -20,7 +23,7 @@ no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \ $(sort $(foreach n,$(foreach m,0 1 2 3 4 5 6 7 8 9,\ $m 1$m 2$m) 30 31,\ -ffixed-v$n)) \ - -ffixed-vrsave -ffixed-vscr + -ffixed-vrsave -ffixed-vscr -mno-altivec -mno-vsx ifeq ($(subdir),csu) sysdep_routines += hp-timing |