diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expr.c | 13 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr43546.c | 12 |
4 files changed, 34 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e0293c5096f..d159346e723 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-02-13 Jakub Jelinek <jakub@redhat.com> + + PR target/43546 + * expr.c (compress_float_constant): If x is a hard register, + extend into a pseudo and then move to x. + 2014-02-13 Dominik Vogt <vogt@linux.vnet.ibm.com> * config/s390/s390.c (s390_asm_output_function_label): Fix crash diff --git a/gcc/expr.c b/gcc/expr.c index f6708da20d9..29ce694704c 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -3726,12 +3726,21 @@ compress_float_constant (rtx x, rtx y) into a new pseudo. This constant may be used in different modes, and if not, combine will put things back together for us. */ trunc_y = force_reg (srcmode, trunc_y); - emit_unop_insn (ic, x, trunc_y, UNKNOWN); + + /* If x is a hard register, perform the extension into a pseudo, + so that e.g. stack realignment code is aware of it. */ + rtx target = x; + if (REG_P (x) && HARD_REGISTER_P (x)) + target = gen_reg_rtx (dstmode); + + emit_unop_insn (ic, target, trunc_y, UNKNOWN); last_insn = get_last_insn (); - if (REG_P (x)) + if (REG_P (target)) set_unique_reg_note (last_insn, REG_EQUAL, y); + if (target != x) + return emit_move_insn (x, target); return last_insn; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 392986f4f8f..881aa3df2a0 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2014-02-13 Jakub Jelinek <jakub@redhat.com> + + PR target/43546 + * gcc.target/i386/pr43546.c: New test. + 2014-02-13 Dominik Vogt <vogt@linux.vnet.ibm.com> * gcc.target/s390/hotpatch-compile-8.c: New test. diff --git a/gcc/testsuite/gcc.target/i386/pr43546.c b/gcc/testsuite/gcc.target/i386/pr43546.c new file mode 100644 index 00000000000..53cb3a07fdf --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr43546.c @@ -0,0 +1,12 @@ +/* PR target/43546 */ +/* { dg-do compile } */ +/* { dg-options "-O1" } */ +/* { dg-additional-options "-mpreferred-stack-boundary=2 -msseregparm -msse" { target ia32 } } */ + +extern void bar (double); + +void +foo (void) +{ + bar (1.0); +} |