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| author | Eric Botcazou <ebotcazou@adacore.com> | 2013-09-02 16:19:20 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2013-09-02 16:19:20 +0000 |
| commit | d617d2d806dd4a1cb6c25f06de191593831bcd40 (patch) | |
| tree | e039d2e13dc40305ec9caffe6a31b046d9e7c791 /gcc/expr.c | |
| parent | 49322b127ddcce7bfc01751a88b2bc83a1540367 (diff) | |
| download | gcc-d617d2d806dd4a1cb6c25f06de191593831bcd40.zip gcc-d617d2d806dd4a1cb6c25f06de191593831bcd40.tar.gz gcc-d617d2d806dd4a1cb6c25f06de191593831bcd40.tar.bz2 | |
re PR middle-end/56382 (FAIL: gcc.c-torture/compile/pr55921.c (internal compiler error))
PR middle-end/56382
* expr.c (emit_move_complex): Do not move complex FP values as parts if
the source or the destination is a single hard register.
From-SVN: r202179
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 13 |
1 files changed, 9 insertions, 4 deletions
@@ -3232,11 +3232,16 @@ emit_move_complex (enum machine_mode mode, rtx x, rtx y) if (push_operand (x, mode)) return emit_move_complex_push (mode, x, y); - /* See if we can coerce the target into moving both values at once. */ - - /* Move floating point as parts. */ + /* See if we can coerce the target into moving both values at once, except + for floating point where we favor moving as parts if this is easy. */ if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT - && optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing) + && optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing + && !(REG_P (x) + && HARD_REGISTER_P (x) + && hard_regno_nregs[REGNO(x)][mode] == 1) + && !(REG_P (y) + && HARD_REGISTER_P (y) + && hard_regno_nregs[REGNO(y)][mode] == 1)) try_int = false; /* Not possible if the values are inherently not adjacent. */ else if (GET_CODE (x) == CONCAT || GET_CODE (y) == CONCAT) |