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author | Chris Lattner <sabre@nondot.org> | 2006-01-31 07:37:20 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-01-31 07:37:20 +0000 |
commit | 302601c3436c3345822e319f7e2cd00099a65296 (patch) | |
tree | bc188d87afefcba95658c27063f14f51afff3673 /lib/Target/Sparc/README.txt | |
parent | af370f7c0c9dc10eb93efcdfe1016ba2f86c047b (diff) | |
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25843 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Sparc/README.txt')
-rw-r--r-- | lib/Target/Sparc/README.txt | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/Target/Sparc/README.txt b/lib/Target/Sparc/README.txt index b08a752a61..93e2dd82b5 100644 --- a/lib/Target/Sparc/README.txt +++ b/lib/Target/Sparc/README.txt @@ -7,4 +7,33 @@ To-do * We can fold small constant offsets into the %hi/%lo references to constant pool addresses as well. * When in V9 mode, register allocate %icc[0-3]. +* Emit the 'Branch on Integer Register with Prediction' instructions. It's + not clear how to write a pattern for this though: + +float %t1(int %a, int* %p) { + %C = seteq int %a, 0 + br bool %C, label %T, label %F +T: + store int 123, int* %p + br label %F +F: + ret float undef +} + +codegens to this: + +t1: + save -96, %o6, %o6 +1) subcc %i0, 0, %l0 +1) bne .LBBt1_2 ! F + nop +.LBBt1_1: ! T + or %g0, 123, %l0 + st %l0, [%i1] +.LBBt1_2: ! F + restore %g0, %g0, %g0 + retl + nop + +1) should be replaced with a brz in V9 mode. |