Author: evancheng
Date: Wed Dec 12 01:54:08 2007
New Revision: 44928
URL: http://llvm.org/viewvc/llvm-project?rev=44928&view=rev
Log:
Add a test case for -optimize-ext-uses.
Added:
llvm/trunk/test/CodeGen/X86/opt-ext-uses.ll
Added: llvm/trunk/test/CodeGen/X86/opt-ext-uses.ll
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/opt-ext-uses.ll?rev=44928&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/opt-ext-uses.ll (added)
+++ llvm/trunk/test/CodeGen/X86/opt-ext-uses.ll Wed Dec 12 01:54:08 2007
@@ -0,0 +1,19 @@
+; 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
+}
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