Changes in directory llvm/test/Transforms/InstCombine:
cast2.ll added (r1.1)
---
Log message:
new testcase: instcombine should remove all the casts.
---
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
+ }
+
+
+
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