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add note about sin

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65137 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Torok Edwin 2009-02-20 18:42:06 +00:00
parent a1fd5b386d
commit 474479fce7
1 changed files with 15 additions and 0 deletions
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15
lib/Target/README.txt
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@ -1689,3 +1689,18 @@ for next field in struct (which is at same address).
For example: store of float into { {{}}, float } could be turned into a store to
the float directly.
//===---------------------------------------------------------------------===//
#include <math.h>
double foo(double a) { return sin(a); }
This compiles into this on x86-64 Linux:
foo:
subq $8, %rsp
call sin
addq $8, %rsp
ret
vs:
foo:
jmp sin