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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-03-21 01:33:03 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-03-21 01:33:03 +0000 |
| commit | ddfa02ba248c981ed346708ee3a80d834b684f97 (patch) | |
| tree | 50d1b0e885fd38ce42639f5be683da025d715d43 /lib/Target/README.txt | |
| parent | 485fafc8406db8552ba5e3ff871a6ee32694ad90 (diff) | |
| download | llvm-ddfa02ba248c981ed346708ee3a80d834b684f97.tar.gz llvm-ddfa02ba248c981ed346708ee3a80d834b684f97.tar.bz2 llvm-ddfa02ba248c981ed346708ee3a80d834b684f97.tar.xz | |
This README entry was fixed recently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127982 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/README.txt')
| -rw-r--r-- | lib/Target/README.txt | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 45da3ddb60..63f1f79962 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -392,34 +392,6 @@ PHI Slicing could be extended to do this. //===---------------------------------------------------------------------===// -LSR should know what GPR types a target has from TargetData. This code: - -volatile short X, Y; // globals - -void foo(int N) { - int i; - for (i = 0; i < N; i++) { X = i; Y = i*4; } -} - -produces two near identical IV's (after promotion) on PPC/ARM: - -LBB1_2: - ldr r3, LCPI1_0 - ldr r3, [r3] - strh r2, [r3] - ldr r3, LCPI1_1 - ldr r3, [r3] - strh r1, [r3] - add r1, r1, #4 - add r2, r2, #1 <- [0,+,1] - sub r0, r0, #1 <- [0,-,1] - cmp r0, #0 - bne LBB1_2 - -LSR should reuse the "+" IV for the exit test. - -//===---------------------------------------------------------------------===// - Tail call elim should be more aggressive, checking to see if the call is followed by an uncond branch to an exit block. |