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| author | Vladimir N. Makarov <vmakarov@redhat.com> | 2021-02-24 13:54:10 -0500 |
|---|---|---|
| committer | Vladimir N. Makarov <vmakarov@redhat.com> | 2021-02-24 13:57:45 -0500 |
| commit | b6680c2084521d2612c3a08aa01b274078c4f3e3 (patch) | |
| tree | ca3a63a64b37926ddc8fb28f657994a153154615 /gcc/lra-constraints.c | |
| parent | 8265ab07f3bbeb672488fdfc6418e0bce89dff9c (diff) | |
| download | gcc-b6680c2084521d2612c3a08aa01b274078c4f3e3.zip gcc-b6680c2084521d2612c3a08aa01b274078c4f3e3.tar.gz gcc-b6680c2084521d2612c3a08aa01b274078c4f3e3.tar.bz2 | |
[PR99123] inline-asm: Don't use decompose_mem_address to find used hard regs
Inline asm in question has empty constraint which means anything
including memory with invalid address. To check used hard regs we
used decompose_mem_address which assumes memory with valid address.
The patch implements the same semantics without assuming valid
addresses.
gcc/ChangeLog:
PR inline-asm/99123
* lra-constraints.c (uses_hard_regs_p): Don't use decompose_mem_address.
gcc/testsuite/ChangeLog:
PR inline-asm/99123
* gcc.target/i386/pr99123.c: New.
Diffstat (limited to 'gcc/lra-constraints.c')
| -rw-r--r-- | gcc/lra-constraints.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index 6a5aa41..51acf7f 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -1904,16 +1904,6 @@ uses_hard_regs_p (rtx x, HARD_REG_SET set) return (x_hard_regno >= 0 && overlaps_hard_reg_set_p (set, mode, x_hard_regno)); } - if (MEM_P (x)) - { - struct address_info ad; - - decompose_mem_address (&ad, x); - if (ad.base_term != NULL && uses_hard_regs_p (*ad.base_term, set)) - return true; - if (ad.index_term != NULL && uses_hard_regs_p (*ad.index_term, set)) - return true; - } fmt = GET_RTX_FORMAT (code); for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) { |