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| author | Ian Lance Taylor <iant@google.com> | 2017-03-20 17:43:08 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-03-20 17:43:08 +0000 |
| commit | dd629845b0931912853a26bf8f8e05adf9f048a2 (patch) | |
| tree | 2f86b99eeb5b9cd8832bcb6d5c42f7815353cf95 /gcc | |
| parent | 8026a5ae9c090029c51657651982603ca6fc381a (diff) | |
| download | gcc-dd629845b0931912853a26bf8f8e05adf9f048a2.zip gcc-dd629845b0931912853a26bf8f8e05adf9f048a2.tar.gz gcc-dd629845b0931912853a26bf8f8e05adf9f048a2.tar.bz2 | |
i386.c (ix86_function_regparm): Save an extra register for -fsplit-stack with DECL_STATIC_CHAIN.
* config/i386/i386.c (ix86_function_regparm): Save an extra
register for -fsplit-stack with DECL_STATIC_CHAIN.
From-SVN: r246286
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 10 |
2 files changed, 13 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7164d10..1385d92 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-03-20 Ian Lance Taylor <iant@google.com> + + * config/i386/i386.c (ix86_function_regparm): Save an extra + register for -fsplit-stack with DECL_STATIC_CHAIN. + 2017-03-17 Palmer Dabbelt <palmer@dabbelt.com> PR target/79912 diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index f58d529..259f97b 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -7975,8 +7975,14 @@ ix86_function_regparm (const_tree type, const_tree decl) local_regparm = 2; /* Save a register for the split stack. */ - if (local_regparm == 3 && flag_split_stack) - local_regparm = 2; + if (flag_split_stack) + { + if (local_regparm == 3) + local_regparm = 2; + else if (local_regparm == 2 + && DECL_STATIC_CHAIN (target->decl)) + local_regparm = 1; + } /* Each fixed register usage increases register pressure, so less registers should be used for argument passing. |