[llvm-commits] CVS: llvm/test/Transforms/InstCombine/cast2.ll

[Chris Lattner]

Changes in directory llvm/test/Transforms/InstCombine:

cast2.ll added (r1.1)
---
Log message:

new testcase: instcombine should remove all the casts.


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Diffs of the changes:  (+24 -0)

 cast2.ll |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+)


Index: llvm/test/Transforms/InstCombine/cast2.ll
diff -c /dev/null llvm/test/Transforms/InstCombine/cast2.ll:1.1
*** /dev/null	Fri Mar  2 23:24:16 2007
--- llvm/test/Transforms/InstCombine/cast2.ll	Fri Mar  2 23:24:06 2007
***************
*** 0 ****
--- 1,24 ----
+ ; Tests to make sure elimination of casts is working correctly
+ ; RUN: llvm-as < %s | opt -instcombine -disable-output &&
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast
+ 
+ define i16 @test1(i16 %a) {
+         %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
+         %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
+         %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
+         %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
+         %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
+         ret i16 %tmp.upgrd.3
+ }
+ 
+ define i16 @test2(i16 %a) {
+         %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
+         %tmp21 = lshr i32 %tmp, 9               ; <i32> [#uses=1]
+         %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
+         %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
+         %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
+         ret i16 %tmp.upgrd.3
+ }
+ 
+ 
+