From a06f01ba1e9b964c14ed6c63b56102d34ec6c45f Mon Sep 17 00:00:00 2001 From: James E Wilson Date: Sat, 20 Dec 2003 02:39:43 +0000 Subject: 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. From-SVN: r74869 --- gcc/flow.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'gcc/flow.c') diff --git a/gcc/flow.c b/gcc/flow.c index 023fb1c..c146310 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; } -- cgit v1.1