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| author | H.J. Lu <hjl.tools@gmail.com> | 2022-09-27 16:19:11 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-09-29 11:13:20 -0700 |
| commit | f1454a75c9a165c0ba30833f23f799044fd7a7fe (patch) | |
| tree | ebd5ae8b9a4fba50d73eca046b17168f3860b5af /gcc | |
| parent | 85adc2ec2b0736d07c0df35ad9a450f97ff59a7c (diff) | |
| download | gcc-f1454a75c9a165c0ba30833f23f799044fd7a7fe.zip gcc-f1454a75c9a165c0ba30833f23f799044fd7a7fe.tar.gz gcc-f1454a75c9a165c0ba30833f23f799044fd7a7fe.tar.bz2 | |
i386: Mark XMM4-XMM6 as clobbered by encodekey128/encodekey256
encodekey128 and encodekey256 operations clear XMM4-XMM6. But it is
documented that XMM4-XMM6 are reserved for future usages and software
should not rely upon them being zeroed. Change encodekey128 and
encodekey256 to clobber XMM4-XMM6.
gcc/
PR target/107061
* config/i386/predicates.md (encodekey128_operation): Check
XMM4-XMM6 as clobbered.
(encodekey256_operation): Likewise.
* config/i386/sse.md (encodekey128u32): Clobber XMM4-XMM6.
(encodekey256u32): Likewise.
gcc/testsuite/
PR target/107061
* gcc.target/i386/keylocker-encodekey128.c: Don't check
XMM4-XMM6.
* gcc.target/i386/keylocker-encodekey256.c: Likewise.
(cherry picked from commit db288230db55dc1ff626f46c708b555847013a41)
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/predicates.md | 20 | ||||
| -rw-r--r-- | gcc/config/i386/sse.md | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/keylocker-encodekey128.c | 1 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/keylocker-encodekey256.c | 1 |
4 files changed, 12 insertions, 14 deletions
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md index a8cc17a..ac02c61 100644 --- a/gcc/config/i386/predicates.md +++ b/gcc/config/i386/predicates.md @@ -2019,11 +2019,11 @@ for(i = 4; i < 7; i++) { elt = XVECEXP (op, 0, i); - if (GET_CODE (elt) != SET - || GET_CODE (SET_DEST (elt)) != REG - || GET_MODE (SET_DEST (elt)) != V2DImode - || REGNO (SET_DEST (elt)) != GET_SSE_REGNO (i) - || SET_SRC (elt) != CONST0_RTX (V2DImode)) + if (GET_CODE (elt) != CLOBBER + || GET_MODE (elt) != VOIDmode + || GET_CODE (XEXP (elt, 0)) != REG + || GET_MODE (XEXP (elt, 0)) != V2DImode + || REGNO (XEXP (elt, 0)) != GET_SSE_REGNO (i)) return false; } @@ -2069,11 +2069,11 @@ for(i = 4; i < 7; i++) { elt = XVECEXP (op, 0, i + 1); - if (GET_CODE (elt) != SET - || GET_CODE (SET_DEST (elt)) != REG - || GET_MODE (SET_DEST (elt)) != V2DImode - || REGNO (SET_DEST (elt)) != GET_SSE_REGNO (i) - || SET_SRC (elt) != CONST0_RTX (V2DImode)) + if (GET_CODE (elt) != CLOBBER + || GET_MODE (elt) != VOIDmode + || GET_CODE (XEXP (elt, 0)) != REG + || GET_MODE (XEXP (elt, 0)) != V2DImode + || REGNO (XEXP (elt, 0)) != GET_SSE_REGNO (i)) return false; } diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md index 407bcd8..eb767e5 100644 --- a/gcc/config/i386/sse.md +++ b/gcc/config/i386/sse.md @@ -28404,7 +28404,7 @@ for (i = 4; i < 7; i++) XVECEXP (operands[2], 0, i) - = gen_rtx_SET (xmm_regs[i], CONST0_RTX (V2DImode)); + = gen_rtx_CLOBBER (VOIDmode, xmm_regs[i]); XVECEXP (operands[2], 0, 7) = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, FLAGS_REG)); @@ -28461,7 +28461,7 @@ for (i = 4; i < 7; i++) XVECEXP (operands[2], 0, i + 1) - = gen_rtx_SET (xmm_regs[i], CONST0_RTX (V2DImode)); + = gen_rtx_CLOBBER (VOIDmode, xmm_regs[i]); XVECEXP (operands[2], 0, 8) = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, FLAGS_REG)); diff --git a/gcc/testsuite/gcc.target/i386/keylocker-encodekey128.c b/gcc/testsuite/gcc.target/i386/keylocker-encodekey128.c index 805e062..57fa9bd 100644 --- a/gcc/testsuite/gcc.target/i386/keylocker-encodekey128.c +++ b/gcc/testsuite/gcc.target/i386/keylocker-encodekey128.c @@ -6,7 +6,6 @@ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm0,\[^\\n\\r\]*" } } */ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm1,\[^\\n\\r\]*16\[^\\n\\r\]*" } } */ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm2,\[^\\n\\r\]*32\[^\\n\\r\]*" } } */ -/* { dg-final { scan-assembler "(?:movdqa|movaps)\[ \\t\]+\[^\\n\]*%xmm\[4-6\],\[^\\n\\r\]*" } } */ #include <immintrin.h> diff --git a/gcc/testsuite/gcc.target/i386/keylocker-encodekey256.c b/gcc/testsuite/gcc.target/i386/keylocker-encodekey256.c index 26f04dc..a9398b4 100644 --- a/gcc/testsuite/gcc.target/i386/keylocker-encodekey256.c +++ b/gcc/testsuite/gcc.target/i386/keylocker-encodekey256.c @@ -8,7 +8,6 @@ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm1,\[^\\n\\r\]*16\[^\\n\\r\]*" } } */ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm2,\[^\\n\\r\]*32\[^\\n\\r\]*" } } */ /* { dg-final { scan-assembler "(?:movdqu|movups)\[ \\t\]+\[^\\n\]*%xmm3,\[^\\n\\r\]*48\[^\\n\\r\]*" } } */ -/* { dg-final { scan-assembler "(?:movdqa|movaps)\[ \\t\]+\[^\\n\]*%xmm\[4-6\],\[^\\n\\r\]*" } } */ #include <immintrin.h> |