diff options
| -rw-r--r-- | gcc/config/i386/i386.md | 21 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr115321.c | 4 |
2 files changed, 15 insertions, 10 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 2c95395..ef83984 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -21193,18 +21193,19 @@ (bswap:SI (match_operand:SI 1 "nonimmediate_operand")))] "" { - if (TARGET_MOVBE) - ; - else if (TARGET_BSWAP) - operands[1] = force_reg (SImode, operands[1]); - else + if (!TARGET_MOVBE) { - rtx x = gen_reg_rtx (SImode); + operands[1] = force_reg (SImode, operands[1]); - emit_insn (gen_bswaphisi2_lowpart (x, operands[1])); - emit_insn (gen_rotlsi3 (x, x, GEN_INT (16))); - emit_insn (gen_bswaphisi2_lowpart (operands[0], x)); - DONE; + if (!TARGET_BSWAP) + { + rtx x = gen_reg_rtx (SImode); + + emit_insn (gen_bswaphisi2_lowpart (x, operands[1])); + emit_insn (gen_rotlsi3 (x, x, GEN_INT (16))); + emit_insn (gen_bswaphisi2_lowpart (operands[0], x)); + DONE; + } } }) diff --git a/gcc/testsuite/gcc.target/i386/pr115321.c b/gcc/testsuite/gcc.target/i386/pr115321.c new file mode 100644 index 0000000..0ddab9b --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr115321.c @@ -0,0 +1,4 @@ +/* { dg-do compile { target ia32 } } */ +/* { dg-options "-march=i386" } */ + +unsigned foo (unsigned x) { return __builtin_bswap32 (x); } |