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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2011-02-07 22:37:28 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2011-02-07 22:37:28 +0000 |
| commit | 33828bcb24176aae72afac0e4953e4b7f9560ef1 (patch) | |
| tree | e5e5d47983c6c1ea457955f84a56b467856f45dc /test/Transforms/SimplifyCFG/switch-to-icmp.ll | |
| parent | 706d946cfe44fa93f482c3a56ed42d52ca81b257 (diff) | |
| download | external_llvm-33828bcb24176aae72afac0e4953e4b7f9560ef1.zip external_llvm-33828bcb24176aae72afac0e4953e4b7f9560ef1.tar.gz external_llvm-33828bcb24176aae72afac0e4953e4b7f9560ef1.tar.bz2 | |
SimplifyCFG: Track the number of used icmps when turning a icmp chain into a switch. If we used only one icmp, don't turn it into a switch.
Also prevent the switch-to-icmp transform from creating identity adds, noticed by Marius Wachtler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125056 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyCFG/switch-to-icmp.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/switch-to-icmp.ll | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/test/Transforms/SimplifyCFG/switch-to-icmp.ll b/test/Transforms/SimplifyCFG/switch-to-icmp.ll index 2499cdb..414f847 100644 --- a/test/Transforms/SimplifyCFG/switch-to-icmp.ll +++ b/test/Transforms/SimplifyCFG/switch-to-icmp.ll @@ -16,8 +16,8 @@ lor.end: ret i1 %0 ; CHECK: @test1 -; CHECK: %off = add i32 %x, -1 -; CHECK: %switch = icmp ult i32 %off, 3 +; CHECK: %x.off = add i32 %x, -1 +; CHECK: %switch = icmp ult i32 %x.off, 3 } define zeroext i1 @test2(i32 %x) nounwind readnone ssp noredzone { @@ -35,6 +35,5 @@ lor.end: ret i1 %0 ; CHECK: @test2 -; CHECK: %off = add i32 %x, 0 -; CHECK: %switch = icmp ult i32 %off, 2 +; CHECK: %switch = icmp ult i32 %x, 2 } |