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| author | Erik Verbruggen <erikjv@me.com> | 2014-03-27 11:16:05 +0000 |
|---|---|---|
| committer | Erik Verbruggen <erikjv@me.com> | 2014-03-27 11:16:05 +0000 |
| commit | 59a12198463bb13f1496205e496a2131462d3f88 (patch) | |
| tree | 00762d21bc95bc44bcc1c08b9fa7213e7577d3f8 /llvm/lib/Target | |
| parent | d897b564ca26228fe1b0f11de5f60f1645129da8 (diff) | |
| download | bcm5719-llvm-59a12198463bb13f1496205e496a2131462d3f88.tar.gz bcm5719-llvm-59a12198463bb13f1496205e496a2131462d3f88.zip | |
InstCombine: merge constants in both operands of icmp.
Transform:
icmp X+Cst2, Cst
into:
icmp X, Cst-Cst2
when Cst-Cst2 does not overflow, and the add has nsw.
llvm-svn: 204912
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/README.txt | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/llvm/lib/Target/README.txt b/llvm/lib/Target/README.txt index a9aab86abda..4ecacf9d010 100644 --- a/llvm/lib/Target/README.txt +++ b/llvm/lib/Target/README.txt @@ -930,18 +930,6 @@ optimized with "clang -emit-llvm-bc | opt -std-compile-opts". //===---------------------------------------------------------------------===// -int g(int x) { return (x - 10) < 0; } -Should combine to "x <= 9" (the sub has nsw). Currently not -optimized with "clang -emit-llvm-bc | opt -std-compile-opts". - -//===---------------------------------------------------------------------===// - -int g(int x) { return (x + 10) < 0; } -Should combine to "x < -10" (the add has nsw). Currently not -optimized with "clang -emit-llvm-bc | opt -std-compile-opts". - -//===---------------------------------------------------------------------===// - int f(int i, int j) { return i < j + 1; } int g(int i, int j) { return j > i - 1; } Should combine to "i <= j" (the add/sub has nsw). Currently not |
