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| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-03-31 14:30:29 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-03-31 14:30:29 +0000 |
| commit | 77e8926908df33778b3152c8f9e653b67462bdef (patch) | |
| tree | ae8fad7cd3fde47e1b9f8cb921dd6289d19b33cf /gcc/emit-rtl.c | |
| parent | 503cb1bd228d5d0fe73f0508984e050df7e9f342 (diff) | |
| download | gcc-77e8926908df33778b3152c8f9e653b67462bdef.tar.gz | |
* emit-rtl.c (dconstm2, dconsthalf): New real constants.
(init_emit_once): Initialize dconstm2 and dconsthalf here.
* real.h (dconstm2, dconsthalf): Add prototypes here.
* real.c (real_sqrt): Use dconsthalf rather than local copy.
* builtins.c (fold_builtin): When optimizing sqrt(exp(x)) as
exp(x/2.0) remember to fold the division if possible.
Fold sin(0.0) as 0.0, cos(0.0) as 1.0, pow(x,1.0) as x,
pow(x,-1.0) as 1.0/x, pow(x,2.0) as x*x, pow(x,-2.0) as
1.0/(x*x) and pow(x,0.5) as sqrt(x).
* gcc.dg/builtins-3.c: Add new tests for sin and cos.
* gcc.dg/builtins-7.c: New test case.
* gcc.dg/builtins-8.c: New test case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@65088 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index ad30637ee0a..4aab67494d4 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -111,6 +111,8 @@ REAL_VALUE_TYPE dconst0; REAL_VALUE_TYPE dconst1; REAL_VALUE_TYPE dconst2; REAL_VALUE_TYPE dconstm1; +REAL_VALUE_TYPE dconstm2; +REAL_VALUE_TYPE dconsthalf; /* All references to the following fixed hard registers go through these unique rtl objects. On machines where the frame-pointer and @@ -5552,6 +5554,10 @@ init_emit_once (line_numbers) REAL_VALUE_FROM_INT (dconst1, 1, 0, double_mode); REAL_VALUE_FROM_INT (dconst2, 2, 0, double_mode); REAL_VALUE_FROM_INT (dconstm1, -1, -1, double_mode); + REAL_VALUE_FROM_INT (dconstm2, -2, -1, double_mode); + + dconsthalf = dconst1; + dconsthalf.exp--; for (i = 0; i <= 2; i++) { |