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| author | Uros Bizjak <ubizjak@gmail.com> | 2020-12-03 17:49:42 +0100 |
|---|---|---|
| committer | Uros Bizjak <ubizjak@gmail.com> | 2020-12-03 17:51:45 +0100 |
| commit | 756f55e62f73eb32787497eb9e564d4b21a6e637 (patch) | |
| tree | dbf2773336146b83d713ec71abc5064e3b4411ca /gcc | |
| parent | 7254a78cf4c419a9b9361289d8c535130cf1dfd0 (diff) | |
| download | gcc-756f55e62f73eb32787497eb9e564d4b21a6e637.zip gcc-756f55e62f73eb32787497eb9e564d4b21a6e637.tar.gz gcc-756f55e62f73eb32787497eb9e564d4b21a6e637.tar.bz2 | |
i386: Fix up ix86_md_asm_adjust for TImode [PR98086]
ix86_md_asm_adjust assumes that dest_mode can be only [QHSD]Imode
and nothing else. The patch rewrites zero-extension part to use
convert_to_mode to handle TImode and hypothetically even wider modes.
2020-12-03 Uroš Bizjak <ubizjak@gmail.com>
Jakub Jelinek <jakub@redhat.com>
gcc/
PR target/98086
* config/i386/i386.c (ix86_md_asm_adjustmd): Rewrite
zero-extension part to use convert_to_mode.
gcc/testsuite/
PR target/98086
* gcc.target/i386/pr98086.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.c | 38 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr98086.c | 17 |
2 files changed, 25 insertions, 30 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index c5db8c9..6321678 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -21508,40 +21508,18 @@ ix86_md_asm_adjust (vec<rtx> &outputs, vec<rtx> &/*inputs*/, continue; } - if (dest_mode == DImode && !TARGET_64BIT) - dest_mode = SImode; - - if (dest_mode != QImode) - { - rtx destqi = gen_reg_rtx (QImode); - emit_insn (gen_rtx_SET (destqi, x)); - - if (TARGET_ZERO_EXTEND_WITH_AND - && optimize_function_for_speed_p (cfun)) - { - x = force_reg (dest_mode, const0_rtx); - - emit_insn (gen_movstrictqi (gen_lowpart (QImode, x), destqi)); - } - else - { - x = gen_rtx_ZERO_EXTEND (dest_mode, destqi); - if (dest_mode == GET_MODE (dest) - && !register_operand (dest, GET_MODE (dest))) - x = force_reg (dest_mode, x); - } - } - - if (dest_mode != GET_MODE (dest)) + if (dest_mode == QImode) + emit_insn (gen_rtx_SET (dest, x)); + else { - rtx tmp = gen_reg_rtx (SImode); + rtx reg = gen_reg_rtx (QImode); + emit_insn (gen_rtx_SET (reg, x)); - emit_insn (gen_rtx_SET (tmp, x)); - emit_insn (gen_zero_extendsidi2 (dest, tmp)); + reg = convert_to_mode (dest_mode, reg, 1); + emit_move_insn (dest, reg); } - else - emit_insn (gen_rtx_SET (dest, x)); } + rtx_insn *seq = get_insns (); end_sequence (); diff --git a/gcc/testsuite/gcc.target/i386/pr98086.c b/gcc/testsuite/gcc.target/i386/pr98086.c new file mode 100644 index 0000000..254a3b9 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr98086.c @@ -0,0 +1,17 @@ +/* PR target/98086 */ +/* { dg-do compile } */ +/* { dg-options "" } */ + +#ifdef __x86_64__ +typedef __int128 T; +#else +typedef long long T; +#endif + +T x; + +void +foo (void) +{ + __asm ("" : "=@ccc" (x)); +} |