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| author | Jakub Jelinek <jakub@redhat.com> | 2019-01-11 11:17:12 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-01-11 11:17:12 +0100 |
| commit | 6ebf16e63f00d96e5740ac4de9f5251d9cb2f50e (patch) | |
| tree | 68e86492c0ece6739cdb0cfdf5af6309c227946b /gcc | |
| parent | a8766179a75fd18a1636b80425f81c0cd54d6151 (diff) | |
| download | gcc-6ebf16e63f00d96e5740ac4de9f5251d9cb2f50e.zip gcc-6ebf16e63f00d96e5740ac4de9f5251d9cb2f50e.tar.gz gcc-6ebf16e63f00d96e5740ac4de9f5251d9cb2f50e.tar.bz2 | |
re PR rtl-optimization/88296 (Infinite loop in lra_split_hard_reg_for)
PR rtl-optimization/88296
* gcc.target/i386/pr88296.c: New test.
From-SVN: r267831
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr88296.c | 66 |
2 files changed, 71 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 11eddf7..beccccd 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2019-01-11 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/88296 + * gcc.target/i386/pr88296.c: New test. + 2019-01-11 Paolo Carlini <paolo.carlini@oracle.com> * g++.dg/diagnostic/extern-initialized.C: New. diff --git a/gcc/testsuite/gcc.target/i386/pr88296.c b/gcc/testsuite/gcc.target/i386/pr88296.c new file mode 100644 index 0000000..d1e7f21 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr88296.c @@ -0,0 +1,66 @@ +/* PR rtl-optimization/88296 */ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-O2 -march=core2 -fnon-call-exceptions -fschedule-insns -fselective-scheduling -funroll-all-loops -fno-caller-saves -fno-guess-branch-probability -fno-ivopts -fno-rerun-cse-after-loop -fno-split-wide-types -fno-tree-bit-ccp -fno-tree-coalesce-vars --param max-completely-peeled-insns=13" } */ + +int a, b, c; +void bar (int, int); + +void +foo (__int128 x, unsigned int y, char z) +{ + __int128 *d = &x; + unsigned short int e = 0; + unsigned char f = 0; + char g = 1; + (void) d; + bar (0, 0); + while (e < 1) + { + __int128 h = 1; + ++c; + e = x; + g /= e; + if (g != 0) + { + int i; + if (g == 0) + i = a; + else + { + ++g; + i = g; + } + if (i == 0) + { + a -= b + (!!g ? y : 0); + break; + } + for (g = 0; g < 3; ++g) + { + unsigned char *j = &f; + x /= h; + h /= x; + for (i = 0; i < 2; ++i) + { + z <<= ((!!g && !!c) ? (b + 1) : (1 / *j)); + y = ~e; + g &= y; + x |= 1; + b *= i; + ++c; + } + f /= b > 1; + e /= f; + x += b << 32; /* { dg-warning "left shift count" } */ + } + if (g << g == 0) + { + e *= b + 1; + a = 32; + f += (e << a) + (y && 1); + x = z; + c += x / 3; + } + } + } +} |