https://gcc.gnu.org/g:671382d0ac71ae808a10f3cee1bb521a32b9406b

commit r16-6642-g671382d0ac71ae808a10f3cee1bb521a32b9406b
Author: Jakub Jelinek <[email protected]>
Date:   Fri Jan 9 12:19:26 2026 +0100

    i386: Add OPTION_MASK_ISA_64BIT to 4 non-ia32 builtins [PR123489]
    
    The following 4 builtins have corresponding insns guarded with TARGET_64BIT
    and are only used in #ifdef __x86_64__ ... #endif section of an intrin
    header, so when used by hand with -m32 they ICE.
    
    Fixed thusly.
    
    I've additionally verified all the #ifdef __x86_64__ ... #endif guarded
    builtins used in intrinsic headers and checked whether they have
    OPTION_MASK_ISA_64BIT, the only other exception was __builtin_ia32_prefetchi
    but I think that one is fine, as expansion in that case has
                if (TARGET_64BIT && TARGET_PREFETCHI
                    && local_func_symbolic_operand (op0, GET_MODE (op0)))
                  emit_insn (gen_prefetchi (op0, op2));
                else
                  {
                    warning (0, "instruction prefetch applies when in 64-bit 
mode"
                                " with RIP-relative addressing and"
                                " option %<-mprefetchi%>;"
                                " they stay NOPs otherwise");
                    emit_insn (gen_nop ());
                  }
    
    2026-01-09  Jakub Jelinek  <[email protected]>
    
            PR target/123489
            * config/i386/i386-builtin.def (__builtin_ia32_cvttsd2sis64_round,
            __builtin_ia32_cvttsd2usis64_round, 
__builtin_ia32_cvttss2sis64_round,
            __builtin_ia32_cvttss2usis64_round): Require OPTION_MASK_ISA_64BIT.
    
            * gcc.target/i386/pr123489.c: New test.

Diff:
---
 gcc/config/i386/i386-builtin.def         |  8 ++++----
 gcc/testsuite/gcc.target/i386/pr123489.c | 20 ++++++++++++++++++++
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/gcc/config/i386/i386-builtin.def b/gcc/config/i386/i386-builtin.def
index 38bb936f7603..30e728ab15d1 100644
--- a/gcc/config/i386/i386-builtin.def
+++ b/gcc/config/i386/i386-builtin.def
@@ -3686,13 +3686,13 @@ BDESC (0, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttps2qqsv8di_mask_round,
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttps2udqsv16sf_mask_round, 
"__builtin_ia32_cvttps2udqs512_mask_round", 
IX86_BUILTIN_VCVTTPS2UDQS512_MASK_ROUND, UNKNOWN, (int) 
V16SI_FTYPE_V16SF_V16SI_HI_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttps2uqqsv8di_mask_round, 
"__builtin_ia32_cvttps2uqqs512_mask_round", 
IX86_BUILTIN_VCVTTPS2UQQS512_MASK_ROUND, UNKNOWN, (int) 
V8DI_FTYPE_V8SF_V8DI_QI_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttsd2sissi_round, 
"__builtin_ia32_cvttsd2sis32_round", IX86_BUILTIN_VCVTTSD2SIS32_ROUND, UNKNOWN, 
(int) INT_FTYPE_V2DF_INT)
-BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttsd2sisdi_round, 
"__builtin_ia32_cvttsd2sis64_round", IX86_BUILTIN_VCVTTSD2SIS64_ROUND, UNKNOWN, 
(int) INT64_FTYPE_V2DF_INT)
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttsd2sisdi_round, "__builtin_ia32_cvttsd2sis64_round", 
IX86_BUILTIN_VCVTTSD2SIS64_ROUND, UNKNOWN, (int) INT64_FTYPE_V2DF_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttsd2usissi_round, 
"__builtin_ia32_cvttsd2usis32_round", IX86_BUILTIN_VCVTTSD2USIS32_ROUND, 
UNKNOWN, (int) INT_FTYPE_V2DF_INT)
-BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttsd2usisdi_round, 
"__builtin_ia32_cvttsd2usis64_round", IX86_BUILTIN_VCVTTSD2USIS64_ROUND, 
UNKNOWN, (int) INT64_FTYPE_V2DF_INT)
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttsd2usisdi_round, "__builtin_ia32_cvttsd2usis64_round", 
IX86_BUILTIN_VCVTTSD2USIS64_ROUND, UNKNOWN, (int) INT64_FTYPE_V2DF_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttss2sissi_round, 
"__builtin_ia32_cvttss2sis32_round", IX86_BUILTIN_VCVTTSS2SIS32_ROUND, UNKNOWN, 
(int) INT_FTYPE_V4SF_INT)
-BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttss2sisdi_round, 
"__builtin_ia32_cvttss2sis64_round", IX86_BUILTIN_VCVTTSS2SIS64_ROUND, UNKNOWN, 
(int) INT64_FTYPE_V4SF_INT)
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttss2sisdi_round, "__builtin_ia32_cvttss2sis64_round", 
IX86_BUILTIN_VCVTTSS2SIS64_ROUND, UNKNOWN, (int) INT64_FTYPE_V4SF_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttss2usissi_round, 
"__builtin_ia32_cvttss2usis32_round", IX86_BUILTIN_VCVTTSS2USIS32_ROUND, 
UNKNOWN, (int) INT_FTYPE_V4SF_INT)
-BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_vcvttss2usisdi_round, 
"__builtin_ia32_cvttss2usis64_round", IX86_BUILTIN_VCVTTSS2USIS64_ROUND, 
UNKNOWN, (int) INT64_FTYPE_V4SF_INT)
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_AVX10_2, 
CODE_FOR_avx10_2_vcvttss2usisdi_round, "__builtin_ia32_cvttss2usis64_round", 
IX86_BUILTIN_VCVTTSS2USIS64_ROUND, UNKNOWN, (int) INT64_FTYPE_V4SF_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_minmaxpv8df_mask_round, 
"__builtin_ia32_minmaxpd512_mask_round", IX86_BUILTIN_MINMAXPD512_MASK_ROUND, 
UNKNOWN, (int) V8DF_FTYPE_V8DF_V8DF_INT_V8DF_UQI_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_minmaxpv32hf_mask_round, 
"__builtin_ia32_minmaxph512_mask_round", IX86_BUILTIN_MINMAXPH512_MASK_ROUND, 
UNKNOWN, (int) V32HF_FTYPE_V32HF_V32HF_INT_V32HF_USI_INT)
 BDESC (0, OPTION_MASK_ISA2_AVX10_2, CODE_FOR_avx10_2_minmaxpv16sf_mask_round, 
"__builtin_ia32_minmaxps512_mask_round", IX86_BUILTIN_MINMAXPS512_MASK_ROUND, 
UNKNOWN, (int) V16SF_FTYPE_V16SF_V16SF_INT_V16SF_UHI_INT)
diff --git a/gcc/testsuite/gcc.target/i386/pr123489.c 
b/gcc/testsuite/gcc.target/i386/pr123489.c
new file mode 100644
index 000000000000..26d7e8d0b1e6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr123489.c
@@ -0,0 +1,20 @@
+/* PR target/123489 */
+/* { dg-do compile } */
+/* { dg-options "-mavx10.2" } */
+
+typedef double v2df __attribute__((__vector_size__(16)));
+typedef float v4sf __attribute__((__vector_size__(16)));
+
+long long
+foo ()
+{
+  return __builtin_ia32_cvttsd2sis64_round ((v2df) {}, 8)      /* { dg-error 
"implicit declaration of function" "" { target ia32 } } */
+        + __builtin_ia32_cvttsd2usis64_round ((v2df) {}, 8);   /* { dg-error 
"implicit declaration of function" "" { target ia32 } } */
+}
+
+long long
+bar ()
+{
+  return __builtin_ia32_cvttss2sis64_round ((v4sf) {}, 8)      /* { dg-error 
"implicit declaration of function" "" { target ia32 } } */
+        + __builtin_ia32_cvttss2usis64_round ((v4sf) {}, 8);   /* { dg-error 
"implicit declaration of function" "" { target ia32 } } */
+}

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