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| author | Peter Bergner <bergner@linux.ibm.com> | 2020-02-20 11:08:02 -0600 |
|---|---|---|
| committer | Peter Bergner <bergner@linux.ibm.com> | 2020-02-20 11:08:02 -0600 |
| commit | b82d426662469ee8b78ec7e8f74abe950485c9d5 (patch) | |
| tree | 66e258a5c502762dc948af558256aad54a00705a | |
| parent | e817c23f6806a6b9201a0a1f77b51cb863af51e9 (diff) | |
| download | gcc-b82d426662469ee8b78ec7e8f74abe950485c9d5.zip gcc-b82d426662469ee8b78ec7e8f74abe950485c9d5.tar.gz gcc-b82d426662469ee8b78ec7e8f74abe950485c9d5.tar.bz2 | |
rs6000: Fix infinite loop building ghostscript and icu [PR93658]
Fix rs6000_legitimate_address_p(), which erroneously marks a valid Altivec
address as being invalid, which causes LRA's process_address() to go into
an infinite loop spilling the same address over and over again.
gcc/
PR target/93658
* config/rs6000/rs6000.c (rs6000_legitimate_address_p): Handle VSX
vector modes.
gcc/testsuite/
PR target/93658
* gcc.target/powerpc/pr93658.c: New test.
| -rw-r--r-- | gcc/testsuite/gcc.target/powerpc/pr93658.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/powerpc/pr93658.c b/gcc/testsuite/gcc.target/powerpc/pr93658.c new file mode 100644 index 0000000..0170d34 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr93658.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -fstack-protector-strong -mcpu=power8" } */ +/* { dg-require-effective-target powerpc_vsx_ok } */ + +/* PR93658: Failure compiling this test is an infinite loop in LRA's + process_address(), so set a short timeout limit. */ +/* { dg-timeout 5 } */ + +void bar(); +char b; +void +foo (void) +{ + char a; + int d = b; + char *e = &a; + while (d) + *e++ = --d; + bar (); +} |