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| author | Uros Bizjak <ubizjak@gmail.com> | 2022-02-09 20:18:10 +0100 |
|---|---|---|
| committer | Uros Bizjak <ubizjak@gmail.com> | 2022-02-09 20:18:48 +0100 |
| commit | 2b399dbabd48639ab4daac462c9d82c6cf3f99cc (patch) | |
| tree | 2476fa0b56128e0a0771ffd89e6739820f4b4526 | |
| parent | eefec38c992e3622a69de9667e91f0cafbff03cc (diff) | |
| download | gcc-2b399dbabd48639ab4daac462c9d82c6cf3f99cc.zip gcc-2b399dbabd48639ab4daac462c9d82c6cf3f99cc.tar.gz gcc-2b399dbabd48639ab4daac462c9d82c6cf3f99cc.tar.bz2 | |
i386: Force inputs to a register to avoid lowpart_subreg failure [PR104458]
Input operands can be in the form of:
(subreg:DI (reg:V2SF 96) 0)
which chokes lowpart_subreg. Force inputs to a register, which is
preferable even when the input operand is from memory.
2022-02-09 Uroš Bizjak <ubizjak@gmail.com>
gcc/ChangeLog:
PR target/104458
* config/i386/i386-expand.cc (ix86_split_idivmod):
Force operands[2] and operands[3] into a register..
gcc/testsuite/ChangeLog:
PR target/104458
* gcc.target/i386/pr104458.c: New test.
| -rw-r--r-- | gcc/config/i386/i386-expand.cc | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr104458.c | 13 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc index eb1930b..ce9607e 100644 --- a/gcc/config/i386/i386-expand.cc +++ b/gcc/config/i386/i386-expand.cc @@ -1407,6 +1407,9 @@ ix86_split_idivmod (machine_mode mode, rtx operands[], rtx scratch, tmp0, tmp1, tmp2; rtx (*gen_divmod4_1) (rtx, rtx, rtx, rtx); + operands[2] = force_reg (mode, operands[2]); + operands[3] = force_reg (mode, operands[3]); + switch (mode) { case E_SImode: diff --git a/gcc/testsuite/gcc.target/i386/pr104458.c b/gcc/testsuite/gcc.target/i386/pr104458.c new file mode 100644 index 0000000..d1d28c1 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr104458.c @@ -0,0 +1,13 @@ +/* PR target/104458 */ +/* { dg-do compile { target { ! ia32 } } } */ +/* { dg-options "-O1 -m8bit-idiv" } */ + +typedef float __attribute__((__vector_size__ (8))) F; + +int i; + +void +foo (F f) +{ + i += i % (long) f; +} |