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| author | Chris Lattner <sabre@nondot.org> | 2006-03-24 20:04:27 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-03-24 20:04:27 +0000 |
| commit | 057f09bc0b6ff4e0995995010b123ad6e9fefd39 (patch) | |
| tree | 8adc56d7a8c7e8390cc45c61206d3b391bbdb875 /lib/Target/PowerPC/README.txt | |
| parent | e6cd96d4672242f620b8e97b28d0e120e1293856 (diff) | |
| download | llvm-057f09bc0b6ff4e0995995010b123ad6e9fefd39.tar.gz llvm-057f09bc0b6ff4e0995995010b123ad6e9fefd39.tar.bz2 llvm-057f09bc0b6ff4e0995995010b123ad6e9fefd39.tar.xz | |
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27077 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/README.txt')
| -rw-r--r-- | lib/Target/PowerPC/README.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt index 5bdefaa23c..12599cb2fa 100644 --- a/lib/Target/PowerPC/README.txt +++ b/lib/Target/PowerPC/README.txt @@ -579,3 +579,18 @@ Since we know that "Vector" is 16-byte aligned and we know the element offset of ".X", we should change the load into a lve*x instruction, instead of doing a load/store/lve*x sequence. +===-------------------------------------------------------------------------=== + +We generate ugly code for this: + +void func(unsigned int *ret, float dx, float dy, float dz, float dw) { + unsigned code = 0; + if(dx < -dw) code |= 1; + if(dx > dw) code |= 2; + if(dy < -dw) code |= 4; + if(dy > dw) code |= 8; + if(dz < -dw) code |= 16; + if(dz > dw) code |= 32; + *ret = code; +} + |