diff options
| author | Jeff Garzik <jgarzik@redhat.com> | 2003-09-09 16:42:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-07 21:01:09 -0700 |
| commit | 1c94d3f88e424adc3ace586076d1529be3c847da (patch) | |
| tree | cee1152ff863ccd145b93c46a8cdf42901acf1a6 /compile-i386.c | |
| parent | 9124d261c0219df86fb1d835c0b6740143d74267 (diff) | |
| download | sparse-dev-1c94d3f88e424adc3ace586076d1529be3c847da.tar.gz | |
[be] Handle 'if' using test/jz insns rather than xor/cmp/je
Suggested by Arjan van de Ven.
Diffstat (limited to 'compile-i386.c')
| -rw-r--r-- | compile-i386.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/compile-i386.c b/compile-i386.c index f5ead65f..486206a9 100644 --- a/compile-i386.c +++ b/compile-i386.c @@ -1006,11 +1006,8 @@ static void emit_if_conditional(struct statement *stmt) /* load 'if' test result into EAX */ insn("movl", val, REG_EAX, "begin if conditional", 0); - /* clear ECX */ - insn("xorl", REG_ECX, REG_ECX, NULL, 0); - /* compare 'if' test result */ - insn("cmpl", REG_EAX, REG_ECX, NULL, 0); + insn("test", REG_EAX, REG_EAX, NULL, 0); /* create end-of-if label / if-failed labelto jump to, * and jump to it if the expression returned zero. @@ -1018,7 +1015,7 @@ static void emit_if_conditional(struct statement *stmt) target = new_label(); target_val = new_storage(STOR_LABEL); target_val->label = target; - insn("je", target_val, NULL, NULL, ATOM_FREE_OP1); + insn("jz", target_val, NULL, NULL, ATOM_FREE_OP1); x86_statement(stmt->if_true); if (stmt->if_false) { |