diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 2fde8cd..e9232cd 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -9772,9 +9772,12 @@ (clobber (reg:CC FLAGS_REG))]) (set (reg:CCZ FLAGS_REG) (compare:CCZ (match_dup 2) (const_int 0)))] { - operands[2] = gen_reg_rtx (TImode); + /* Calling force_reg may clobber operands[0]. */ + rtx save_op0 = operands[0]; if (!x86_64_hilo_general_operand (operands[1], TImode)) operands[1] = force_reg (TImode, operands[1]); + operands[2] = gen_reg_rtx (TImode); + operands[0] = save_op0; }) ;; Combine likes to form bit extractions for some tests. Humor it. diff --git a/gcc/testsuite/gcc.target/i386/pr106577.c b/gcc/testsuite/gcc.target/i386/pr106577.c new file mode 100644 index 0000000..4e35031 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr106577.c @@ -0,0 +1,7 @@ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-O2 -mavx" } */ + +int i; +void foo(void) { + i ^= !(((unsigned __int128)0xf0f0f0f0f0f0f0f0 << 64 | 0xf0f0f0f0f0f0f0f0) & i); +}