diff options
| author | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-12-20 02:39:43 +0000 |
|---|---|---|
| committer | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-12-20 02:39:43 +0000 |
| commit | 72ab13a3121bd2d02461aca32c04049faa85dc1a (patch) | |
| tree | efcdb3a3200c268a6543afc46e842ac9d31ecbed /gcc/flow.c | |
| parent | 7f24deda224f1e241b9988b0d93eba6bcfc33e72 (diff) | |
| download | gcc-72ab13a3121bd2d02461aca32c04049faa85dc1a.tar.gz | |
Patch for asm clobber of fp.
* flow.c (mark_set_regs, case PARALLEL): Scan loop forwards.
Add case for ASM_OPERANDS.
* global.c (global_alloc): Set regs_ever_live for regs_asm_clobbered
registers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74869 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index 023fb1c8350..c146310cb0a 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -2468,7 +2468,9 @@ mark_set_regs (struct propagate_block_info *pbi, rtx x, rtx insn) { int i; - for (i = XVECLEN (x, 0) - 1; i >= 0; i--) + /* We must scan forwards. If we have an asm, we need to set + the PROP_ASM_SCAN flag before scanning the clobbers. */ + for (i = 0; i < XVECLEN (x, 0); i++) { rtx sub = XVECEXP (x, 0, i); switch (code = GET_CODE (sub)) @@ -2495,6 +2497,10 @@ mark_set_regs (struct propagate_block_info *pbi, rtx x, rtx insn) mark_set_1 (pbi, code, SET_DEST (sub), cond, insn, flags); break; + case ASM_OPERANDS: + flags |= PROP_ASM_SCAN; + break; + default: break; } |