https://gcc.gnu.org/g:fc5f0a798de64bd132f5493ca6ff51942ece41d6
commit r16-8931-gfc5f0a798de64bd132f5493ca6ff51942ece41d6 Author: Andi Kleen <[email protected]> Date: Mon May 18 08:40:53 2026 -0700 Fix masm ptwrite again The earlier 64bit ptwrite as 32bit fix broke Intel syntax output. Handle that too by using an alternative. In Intel syntax the instruction data type is defined by the operands. I'll commit it as obvious in a day or so for 15/16/trunk, unless there are objections. PR target/125351 gcc/ChangeLog: * config/i386/i386.md: Use alternative to handle masm ptwrite syntax. gcc/testsuite/ChangeLog: * gcc.target/i386/pr125351.c: New test. Diff: --- gcc/config/i386/i386.md | 2 +- gcc/testsuite/gcc.target/i386/pr125351.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index e3f690c8c878..179c30494e82 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -30189,7 +30189,7 @@ [(unspec_volatile [(match_operand:SWI48 0 "nonimmediate_operand" "rm")] UNSPECV_PTWRITE)] "TARGET_PTWRITE" - "ptwrite<imodesuffix>\t%0" + "ptwrite{<imodesuffix>|}\t%0" [(set_attr "type" "other") (set_attr "prefix_0f" "1") (set_attr "prefix_rep" "1")]) diff --git a/gcc/testsuite/gcc.target/i386/pr125351.c b/gcc/testsuite/gcc.target/i386/pr125351.c new file mode 100644 index 000000000000..f21adcae44a3 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr125351.c @@ -0,0 +1,3 @@ +/* { dg-do compile } */ +/* { dg-options "-mptwrite -masm=intel" } */ +void foo() { __builtin_ia32_ptwrite32(0); }
