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| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-01-10 19:49:17 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-01-10 19:49:17 +0000 |
| commit | 91f28fc1c95f7bb9e3986a717c3ef5091f9206a5 (patch) | |
| tree | 9a47d49d02dc90320186ca2c7a7c8044df8efbde /gcc/config/i386/i386.md | |
| parent | 115e3f9b2615bbe7bce75e4d29638e977c10ac86 (diff) | |
| download | gcc-91f28fc1c95f7bb9e3986a717c3ef5091f9206a5.tar.gz | |
PR target/55929
* config/i386/i386.md (xbegin): Use %eax as a temporary register.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195094 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 95a52cdd1a7..8fd1f915d90 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -18013,19 +18013,22 @@ (define_expand "xbegin" [(set (match_operand:SI 0 "register_operand") - (unspec_volatile:SI [(match_dup 1)] UNSPECV_XBEGIN))] + (unspec_volatile:SI [(const_int 0)] UNSPECV_XBEGIN))] "TARGET_RTM" { rtx label = gen_label_rtx (); - operands[1] = force_reg (SImode, constm1_rtx); + /* xbegin is emitted as jump_insn, so reload won't be able + to reload its operand. Force the value into AX hard register. */ + rtx ax_reg = gen_rtx_REG (SImode, AX_REG); + emit_move_insn (ax_reg, constm1_rtx); - emit_jump_insn (gen_xbegin_1 (operands[1], label)); + emit_jump_insn (gen_xbegin_1 (ax_reg, label)); emit_label (label); LABEL_NUSES (label) = 1; - emit_move_insn (operands[0], operands[1]); + emit_move_insn (operands[0], ax_reg); DONE; }) |