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| author | Joseph Myers <joseph@codesourcery.com> | 2008-08-06 16:20:14 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2008-08-06 16:20:14 +0100 |
| commit | e088f04bdb2331f7ec6ba0faa4eb2c64982e56c3 (patch) | |
| tree | b10889a27b1cc0c2c180bc4ea92acf3aa3f1f998 /gcc/jump.c | |
| parent | 6f371a2e412f0384dcdc36ebd00c8597be74a098 (diff) | |
| download | gcc-e088f04bdb2331f7ec6ba0faa4eb2c64982e56c3.zip gcc-e088f04bdb2331f7ec6ba0faa4eb2c64982e56c3.tar.gz gcc-e088f04bdb2331f7ec6ba0faa4eb2c64982e56c3.tar.bz2 | |
jump.c (rtx_renumbered_equal_p): Do not call subreg_regno_offset for unrepresentable subregs or treat them as...
* jump.c (rtx_renumbered_equal_p): Do not call subreg_regno_offset
for unrepresentable subregs or treat them as equal to other regs
or subregs with the same register number.
From-SVN: r138804
Diffstat (limited to 'gcc/jump.c')
| -rw-r--r-- | gcc/jump.c | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -1552,12 +1552,22 @@ rtx_renumbered_equal_p (const_rtx x, const_rtx y) if (reg_renumber[reg_x] >= 0) { + if (!subreg_offset_representable_p (reg_renumber[reg_x], + GET_MODE (SUBREG_REG (x)), + byte_x, + GET_MODE (x))) + return 0; reg_x = subreg_regno_offset (reg_renumber[reg_x], GET_MODE (SUBREG_REG (x)), byte_x, GET_MODE (x)); byte_x = 0; } + else if (!subreg_offset_representable_p (reg_x, + GET_MODE (SUBREG_REG (x)), + byte_x, + GET_MODE (x))) + return 0; } else { @@ -1573,12 +1583,22 @@ rtx_renumbered_equal_p (const_rtx x, const_rtx y) if (reg_renumber[reg_y] >= 0) { + if (!subreg_offset_representable_p (reg_renumber[reg_y], + GET_MODE (SUBREG_REG (y)), + byte_y, + GET_MODE (y))) + return 0; reg_y = subreg_regno_offset (reg_renumber[reg_y], GET_MODE (SUBREG_REG (y)), byte_y, GET_MODE (y)); byte_y = 0; } + else if (!subreg_offset_representable_p (reg_y, + GET_MODE (SUBREG_REG (y)), + byte_y, + GET_MODE (y))) + return 0; } else { |