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| author | Peter Bergner <bergner@linux.ibm.com> | 2021-02-15 10:38:33 -0600 |
|---|---|---|
| committer | Peter Bergner <bergner@linux.ibm.com> | 2021-02-15 10:39:24 -0600 |
| commit | a33927c9ab4af3f4595251ce0c8ba54db821b039 (patch) | |
| tree | 5f79735742d5e3d77c1993dbbce39b08027367e5 /gcc/tree-ssa-structalias.c | |
| parent | cc9a0a3d79d6abb08753a819c9ea21a25015e962 (diff) | |
| download | gcc-a33927c9ab4af3f4595251ce0c8ba54db821b039.zip gcc-a33927c9ab4af3f4595251ce0c8ba54db821b039.tar.gz gcc-a33927c9ab4af3f4595251ce0c8ba54db821b039.tar.bz2 | |
rtl-optimization: Fix uninitialized use of opaque mode variable ICE [PR98872]
The initialize_uninitialized_regs function emits (set (reg:) (CONST0_RTX))
for all uninitialized pseudo uses. However, some modes (eg, opaque modes)
may not have a CONST0_RTX defined, leading to an ICE when we try and create
the initialization insn. The fix is to skip emitting the initialization
if there is no CONST0_RTX defined for the mode.
2021-02-15 Peter Bergner <bergner@linux.ibm.com>
gcc/
PR rtl-optimization/98872
* init-regs.c (initialize_uninitialized_regs): Skip initialization
if CONST0_RTX is NULL.
gcc/testsuite/
PR rtl-optimization/98872
* gcc.target/powerpc/pr98872.c: New test.
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
0 files changed, 0 insertions, 0 deletions