diff options
Diffstat (limited to 'test/FrontendC/2010-07-27-MinNoFoldConst.c')
| -rw-r--r-- | test/FrontendC/2010-07-27-MinNoFoldConst.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/test/FrontendC/2010-07-27-MinNoFoldConst.c b/test/FrontendC/2010-07-27-MinNoFoldConst.c deleted file mode 100644 index ea711e5..0000000 --- a/test/FrontendC/2010-07-27-MinNoFoldConst.c +++ /dev/null @@ -1,18 +0,0 @@ -// RUN: %llvmgcc -S %s -o - | FileCheck %s -extern int printf(const char *, ...); -static void bad(unsigned int v1, unsigned int v2) { - printf("%u\n", 1631381461u * (((v2 - 1273463329u <= v1 - 1273463329u) ? v2 : v1) - 1273463329u) + 121322179u); -} -// Radar 8198362 -// GCC FE wants to convert the above to -// 1631381461u * MIN(v2 - 1273463329u, v1 - 1273463329u) -// and then to -// MIN(1631381461u * v2 - 4047041419, 1631381461u * v1 - 4047041419) -// -// 1631381461u * 1273463329u = 2077504466193943669, but 32-bit overflow clips -// this to 4047041419. This breaks the comparison implicit in the MIN(). -// Two multiply operations suggests the bad optimization is happening; -// one multiplication, after the MIN(), is correct. -// CHECK: mul -// CHECK-NOT: mul -// CHECK: ret |