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Add a test case for -optimize-ext-uses.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44928 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-12-12 07:54:08 +00:00
parent db2d524d5f
commit 2044bccd1a
1 changed files with 19 additions and 0 deletions
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19
test/CodeGen/X86/opt-ext-uses.ll Normal file
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; RUN: llvm-as < %s | llc -march=x86 -optimize-ext-uses=true | grep movw | count 1
define i16 @t() signext {
entry:
%tmp180 = load i16* null, align 2 ; <i16> [#uses=3]
%tmp180181 = sext i16 %tmp180 to i32 ; <i32> [#uses=1]
%tmp182 = add i16 %tmp180, 10
%tmp185 = icmp slt i16 %tmp182, 0 ; <i1> [#uses=1]
br i1 %tmp185, label %cond_true188, label %cond_next245
cond_true188: ; preds = %entry
%tmp195196 = trunc i16 %tmp180 to i8 ; <i8> [#uses=0]
ret i16 %tmp180
cond_next245: ; preds = %entry
%tmp256 = and i32 %tmp180181, 15 ; <i32> [#uses=0]
%tmp3 = trunc i32 %tmp256 to i16
ret i16 %tmp3
}