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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-07-26 00:12:12 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-07-26 00:12:12 +0000 |
| commit | f006ddd1621d52f04f40d0f492e5750473d5baf5 (patch) | |
| tree | 9f9c52891b9ee1d5662b269b9f82fd696c53f85c /gcc | |
| parent | 01314f6fdcf557f714593b4e598aa791c553d897 (diff) | |
| download | gcc-f006ddd1621d52f04f40d0f492e5750473d5baf5.tar.gz | |
�
* i386.c (output_to_reg): Add code to emulate non-popping DImode
case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@21389 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b9afc60f02e..fd398090fa3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Sun Jul 26 01:11:12 1998 H.J. Lu (hjl@gnu.org) + + * i386.c (output_to_reg): Add code to emulate non-popping DImode + case. + Sun Jul 26 01:01:32 1998 Jeffrey A Law (law@cygnus.com) * regmove.c (regmove_optimize): Fix typo initializing regmove_bb_head. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 76f5370f410..8e5211f1337 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -891,6 +891,17 @@ output_to_reg (dest, dies, scratch_mem) { if (dies) output_asm_insn (AS1 (fistp%z3,%y0), xops); + else if (GET_MODE (xops[3]) == DImode && ! dies) + { + /* There is no DImode version of this without a stack pop, so + we must emulate it. It doesn't matter much what the second + instruction is, because the value being pushed on the FP stack + is not used except for the following stack popping store. + This case can only happen without optimization, so it doesn't + matter that it is inefficient. */ + output_asm_insn (AS1 (fistp%z3,%0), xops); + output_asm_insn (AS1 (fild%z3,%0), xops); + } else output_asm_insn (AS1 (fist%z3,%y0), xops); } |