diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/PowerPC/README.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt index 42a644c..0a9c5bd 100644 --- a/lib/Target/PowerPC/README.txt +++ b/lib/Target/PowerPC/README.txt @@ -536,3 +536,13 @@ void foo(void) { bar (x); } +===-------------------------------------------------------------------------=== + +Altivec: Codegen'ing MUL with vector FMADD should add -0.0, not 0.0: +http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8763 + +We need to codegen -0.0 vector efficiently (no constant pool load). + +When -ffast-math is on, we can use 0.0. + +===-------------------------------------------------------------------------=== |