On 7/30/25 11:22 PM, pan2...@intel.com wrote:
From: Pan Li <pan2...@intel.com>
The previous code-gen of scalar unsigned SAT_MUL, aka usmul.
Leverage the mulhs by mistake, it should be mulhu for the
hight bit result of mul. Thus, this patch would like to make
it correct.
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_expand_xmode_usmul): Take
umulhu for high bits mul result.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/sat/sat_u_mul-1-u32-from-u64.c: Add mulhu
asm check.
* gcc.target/riscv/sat/sat_u_mul-1-u64-from-u128.c: Ditto.
OK. Any change we could get run test for this in addition to the scanners?
jeff
