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| author | Uros Bizjak <ubizjak@gmail.com> | 2024-06-03 15:48:18 +0200 |
|---|---|---|
| committer | Uros Bizjak <ubizjak@gmail.com> | 2024-06-03 15:49:45 +0200 |
| commit | 6ab5145825ca7e96fcbe3aa505d42e4ae8f81009 (patch) | |
| tree | 7d17a96c3b8a93f4ebac4d5ad741156f2db8e51d | |
| parent | 6fb43d1b90e2683f6f41f04a65341fc2dab4b495 (diff) | |
| download | gcc-6ab5145825ca7e96fcbe3aa505d42e4ae8f81009.zip gcc-6ab5145825ca7e96fcbe3aa505d42e4ae8f81009.tar.gz gcc-6ab5145825ca7e96fcbe3aa505d42e4ae8f81009.tar.bz2 | |
i386: Force operand 1 of bswapsi2 to a register for !TARGET_BSWAP [PR115321]
PR target/115321
gcc/ChangeLog:
* config/i386/i386.md (bswapsi2): Force operand 1
to a register also for !TARGET_BSWAP.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr115321.c: New test.
| -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); } |