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author | Pirama Arumuga Nainar <pirama@google.com> | 2015-04-10 22:08:18 +0000 |
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committer | Android Git Automerger <android-git-automerger@android.com> | 2015-04-10 22:08:18 +0000 |
commit | 13a7db5b9c4f5e543d037be68ec3428216bfd550 (patch) | |
tree | 1b2c9792582e12f5af0b1512e3094425f0dc0df9 /lib/Target/README.txt | |
parent | 0eb46f5d1e06a4284663d636a74b06adc3a161d7 (diff) | |
parent | 31195f0bdca6ee2a5e72d07edf13e1d81206d949 (diff) | |
download | external_llvm-13a7db5b9c4f5e543d037be68ec3428216bfd550.zip external_llvm-13a7db5b9c4f5e543d037be68ec3428216bfd550.tar.gz external_llvm-13a7db5b9c4f5e543d037be68ec3428216bfd550.tar.bz2 |
am 31195f0b: Merge "Update aosp/master llvm for rebase to r233350"
* commit '31195f0bdca6ee2a5e72d07edf13e1d81206d949':
Update aosp/master llvm for rebase to r233350
Diffstat (limited to 'lib/Target/README.txt')
-rw-r--r-- | lib/Target/README.txt | 41 |
1 files changed, 2 insertions, 39 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 0fa56e6..282d923 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -1268,7 +1268,8 @@ int foo (void) { .. else if (strchr ("<>", *intel_parser.op_string) -Those should be turned into a switch. +Those should be turned into a switch. SimplifyLibCalls only gets the second +case. //===---------------------------------------------------------------------===// @@ -1843,44 +1844,6 @@ we remove checking in code like //===---------------------------------------------------------------------===// -This code (from Benchmarks/Dhrystone/dry.c): - -define i32 @Func1(i32, i32) nounwind readnone optsize ssp { -entry: - %sext = shl i32 %0, 24 - %conv = ashr i32 %sext, 24 - %sext6 = shl i32 %1, 24 - %conv4 = ashr i32 %sext6, 24 - %cmp = icmp eq i32 %conv, %conv4 - %. = select i1 %cmp, i32 10000, i32 0 - ret i32 %. -} - -Should be simplified into something like: - -define i32 @Func1(i32, i32) nounwind readnone optsize ssp { -entry: - %sext = shl i32 %0, 24 - %conv = and i32 %sext, 0xFF000000 - %sext6 = shl i32 %1, 24 - %conv4 = and i32 %sext6, 0xFF000000 - %cmp = icmp eq i32 %conv, %conv4 - %. = select i1 %cmp, i32 10000, i32 0 - ret i32 %. -} - -and then to: - -define i32 @Func1(i32, i32) nounwind readnone optsize ssp { -entry: - %conv = and i32 %0, 0xFF - %conv4 = and i32 %1, 0xFF - %cmp = icmp eq i32 %conv, %conv4 - %. = select i1 %cmp, i32 10000, i32 0 - ret i32 %. -} -//===---------------------------------------------------------------------===// - clang -O3 currently compiles this code int g(unsigned int a) { |