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| author | René Rebe <rene@exactcode.de> | 2024-07-12 21:17:08 +0000 |
|---|---|---|
| committer | Peter Bergner <bergner@linux.ibm.com> | 2024-07-18 13:13:34 -0500 |
| commit | 6962835bca3e6bef0f6ceae84a7814138b08b8a5 (patch) | |
| tree | aa9cfbf7ac42c97178860c1f69e2131144d66dd3 /gcc | |
| parent | c19237614b42ddae80a9a24e0b282cecc8aefb86 (diff) | |
| download | gcc-6962835bca3e6bef0f6ceae84a7814138b08b8a5.zip gcc-6962835bca3e6bef0f6ceae84a7814138b08b8a5.tar.gz gcc-6962835bca3e6bef0f6ceae84a7814138b08b8a5.tar.bz2 | |
rs6000: Fix .machine cpu selection w/ altivec [PR97367]
There are various non-IBM CPUs with altivec, so we cannot use that
flag to determine which .machine cpu to use, so ignore it.
Emit an additional ".machine altivec" if Altivec is enabled so
that the assembler doesn't require an explicit -maltivec option
to assemble any Altivec instructions for those targets where
the ".machine cpu" is insufficient to enable Altivec. For example,
-mcpu=G5 emits a ".machine power4".
2024-07-18 René Rebe <rene@exactcode.de>
Peter Bergner <bergner@linux.ibm.com>
gcc/
PR target/97367
* config/rs6000/rs6000.cc (rs6000_machine_from_flags): Do not consider
OPTION_MASK_ALTIVEC.
(emit_asm_machine): For Altivec compiles, emit a ".machine altivec".
gcc/testsuite/
PR target/97367
* gcc.target/powerpc/pr97367.c: New test.
Signed-off-by: René Rebe <rene@exactcode.de>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.cc | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/powerpc/pr97367.c | 13 |
2 files changed, 17 insertions, 1 deletions
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index 2c0a7fc..5ed64b1 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -5896,7 +5896,8 @@ rs6000_machine_from_flags (void) HOST_WIDE_INT flags = rs6000_isa_flags; /* Disable the flags that should never influence the .machine selection. */ - flags &= ~(OPTION_MASK_PPC_GFXOPT | OPTION_MASK_PPC_GPOPT | OPTION_MASK_ISEL); + flags &= ~(OPTION_MASK_PPC_GFXOPT | OPTION_MASK_PPC_GPOPT | OPTION_MASK_ISEL + | OPTION_MASK_ALTIVEC); if ((flags & (ISA_3_1_MASKS_SERVER & ~ISA_3_0_MASKS_SERVER)) != 0) return "power10"; @@ -5921,6 +5922,8 @@ void emit_asm_machine (void) { fprintf (asm_out_file, "\t.machine %s\n", rs6000_machine); + if (TARGET_ALTIVEC) + fprintf (asm_out_file, "\t.machine altivec\n"); } #endif diff --git a/gcc/testsuite/gcc.target/powerpc/pr97367.c b/gcc/testsuite/gcc.target/powerpc/pr97367.c new file mode 100644 index 0000000..ef269a5 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr97367.c @@ -0,0 +1,13 @@ +/* PR target/97367 */ +/* { dg-options "-mdejagnu-cpu=G5" } */ + +/* Verify we emit a ".machine power4" and ".machine altivec" rather + than a ".machine power7". */ + +int dummy (void) +{ + return 0; +} + +/* { dg-final { scan-assembler {\.machine power4\M} } } */ +/* { dg-final { scan-assembler {\.machine altivec\M} } } */ |