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| author | Haochen Gui <guihaoc@gcc.gnu.org> | 2021-11-02 14:09:32 +0800 |
|---|---|---|
| committer | Haochen Gui <guihaoc@gcc.gnu.org> | 2021-11-08 10:48:49 +0800 |
| commit | 14e355df30534b1d07018e2934948a09fa5a8e52 (patch) | |
| tree | 264a260b32fe61e68d12d63ba485af0c61485d34 /gcc/config/rs6000 | |
| parent | ae1de0bf72fca92f94a7e29f51ce4448b877db4a (diff) | |
| download | gcc-14e355df30534b1d07018e2934948a09fa5a8e52.zip gcc-14e355df30534b1d07018e2934948a09fa5a8e52.tar.gz gcc-14e355df30534b1d07018e2934948a09fa5a8e52.tar.bz2 | |
Disables gimple folding for VSX_BUILTIN_XVMINDP, VSX_BUILTIN_XVMAXDP,ALTIVEC_BUILTIN_VMINFP and ALTIVEC_BUILTIN_VMAXFP when fast-math is not set.
gcc/
* config/rs6000/rs6000-call.c (rs6000_gimple_fold_builtin): Disable
gimple fold for VSX_BUILTIN_XVMINDP, ALTIVEC_BUILTIN_VMINFP,
VSX_BUILTIN_XVMAXDP, ALTIVEC_BUILTIN_VMAXFP when fast-math is not
set.
gcc/testsuite/
* gcc.target/powerpc/vec-minmax-1.c: New test.
* gcc.target/powerpc/vec-minmax-2.c: Likewise.
Diffstat (limited to 'gcc/config/rs6000')
| -rw-r--r-- | gcc/config/rs6000/rs6000-call.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c index 7121e50..c7fdf72 100644 --- a/gcc/config/rs6000/rs6000-call.c +++ b/gcc/config/rs6000/rs6000-call.c @@ -12536,6 +12536,14 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) return true; /* flavors of vec_min. */ case VSX_BUILTIN_XVMINDP: + case ALTIVEC_BUILTIN_VMINFP: + { + lhs = gimple_call_lhs (stmt); + tree type = TREE_TYPE (lhs); + if (HONOR_NANS (type)) + return false; + gcc_fallthrough (); + } case P8V_BUILTIN_VMINSD: case P8V_BUILTIN_VMINUD: case ALTIVEC_BUILTIN_VMINSB: @@ -12544,7 +12552,6 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) case ALTIVEC_BUILTIN_VMINUB: case ALTIVEC_BUILTIN_VMINUH: case ALTIVEC_BUILTIN_VMINUW: - case ALTIVEC_BUILTIN_VMINFP: arg0 = gimple_call_arg (stmt, 0); arg1 = gimple_call_arg (stmt, 1); lhs = gimple_call_lhs (stmt); @@ -12554,6 +12561,14 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) return true; /* flavors of vec_max. */ case VSX_BUILTIN_XVMAXDP: + case ALTIVEC_BUILTIN_VMAXFP: + { + lhs = gimple_call_lhs (stmt); + tree type = TREE_TYPE (lhs); + if (HONOR_NANS (type)) + return false; + gcc_fallthrough (); + } case P8V_BUILTIN_VMAXSD: case P8V_BUILTIN_VMAXUD: case ALTIVEC_BUILTIN_VMAXSB: @@ -12562,7 +12577,6 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) case ALTIVEC_BUILTIN_VMAXUB: case ALTIVEC_BUILTIN_VMAXUH: case ALTIVEC_BUILTIN_VMAXUW: - case ALTIVEC_BUILTIN_VMAXFP: arg0 = gimple_call_arg (stmt, 0); arg1 = gimple_call_arg (stmt, 1); lhs = gimple_call_lhs (stmt); |