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| author | Jeff Law <jlaw@ventanamicro.com> | 2024-07-31 11:30:27 -0600 |
|---|---|---|
| committer | Jeff Law <jlaw@ventanamicro.com> | 2024-07-31 11:32:30 -0600 |
| commit | 69a9ee05c68bd1fe7f5b3be86baacc8f0a599915 (patch) | |
| tree | 8d13d3f757adc39338b90d2312ed80dbc756e6eb /gcc | |
| parent | dcdefe47e18fabc340f9862a27ebd521dfa3d38c (diff) | |
| download | gcc-69a9ee05c68bd1fe7f5b3be86baacc8f0a599915.zip gcc-69a9ee05c68bd1fe7f5b3be86baacc8f0a599915.tar.gz gcc-69a9ee05c68bd1fe7f5b3be86baacc8f0a599915.tar.bz2 | |
[target/116104] Fix more rtl-checking failures in ext-dce
More enable-rtl-checking fixes for ext-dce. Very similar to the one recently
posted, this time covering more of the shift ops.
I checked all instances of CONSTANT_P guarding [U]INTVAL and fixed all that
looked wrong. I also created a dummy assembler/linker so that I could run the
GCC testsuite on gcn and verified that wasn't tripping any rtl-checking bugs in
ext-dce anymore.
Obviously this has also gone through x86 bootstrap and regression tested.
Pushing to the trunk.
pr target/116104
gcc/
* ext-dce.cc (carry_backpropagate): Change more guards of [U]INTVAL to
test CONST_INT_P rather than CONSTANT_P, fixing rtl-checking failures.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ext-dce.cc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/ext-dce.cc b/gcc/ext-dce.cc index f7b0eb1..97a6642 100644 --- a/gcc/ext-dce.cc +++ b/gcc/ext-dce.cc @@ -501,7 +501,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x) /* We propagate for the shifted operand, but not the shift count. The count is handled specially. */ case LSHIFTRT: - if (CONSTANT_P (XEXP (x, 1)) + if (CONST_INT_P (XEXP (x, 1)) && known_lt (UINTVAL (XEXP (x, 1)), GET_MODE_BITSIZE (mode))) return mmask & (mask << INTVAL (XEXP (x, 1))); return mmask; @@ -509,7 +509,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x) /* We propagate for the shifted operand, but not the shift count. The count is handled specially. */ case ASHIFTRT: - if (CONSTANT_P (XEXP (x, 1)) + if (CONST_INT_P (XEXP (x, 1)) && known_lt (UINTVAL (XEXP (x, 1)), GET_MODE_BITSIZE (mode))) { HOST_WIDE_INT sign = 0; @@ -526,7 +526,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x) return 0; if (XEXP (x, 1) == const1_rtx) return mmask; - if (CONSTANT_P (XEXP (x, 1))) + if (CONST_INT_P (XEXP (x, 1))) { if (pow2p_hwi (INTVAL (XEXP (x, 1)))) return mmask & (mask << (GET_MODE_BITSIZE (mode).to_constant () @@ -549,7 +549,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x) count. The count is handled specially. */ case SS_ASHIFT: case US_ASHIFT: - if (CONSTANT_P (XEXP (x, 1)) + if (CONST_INT_P (XEXP (x, 1)) && UINTVAL (XEXP (x, 1)) < GET_MODE_BITSIZE (mode).to_constant ()) { return ((mmask & ~((unsigned HOST_WIDE_INT)mmask |