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

[Chris Lattner]

Changes in directory llvm/test/Regression/Transforms/InstCombine:

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

All of these should turn into sign extends (e.g. extsh/extsb on PPC)


---
Diffs of the changes:  (+43 -0)

 signext.ll |   43 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+)


Index: llvm/test/Regression/Transforms/InstCombine/signext.ll
diff -c /dev/null llvm/test/Regression/Transforms/InstCombine/signext.ll:1.1
*** /dev/null	Sat Sep 24 18:42:28 2005
--- llvm/test/Regression/Transforms/InstCombine/signext.ll	Sat Sep 24 18:42:18 2005
***************
*** 0 ****
--- 1,43 ----
+ ; RUN: llvm-as < %s | opt -instcombine -disable-output &&
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep '(and\|xor\|add\|shl\|shr)'
+ 
+ int %test1(int %x) {
+         %tmp.1 = and int %x, 65535              ; <int> [#uses=1]
+         %tmp.2 = xor int %tmp.1, -32768         ; <int> [#uses=1]
+         %tmp.3 = add int %tmp.2, 32768          ; <int> [#uses=1]
+         ret int %tmp.3
+ }
+ 
+ int %test2(int %x) {
+         %tmp.1 = and int %x, 65535              ; <int> [#uses=1]
+         %tmp.2 = xor int %tmp.1, 32768          ; <int> [#uses=1]
+         %tmp.3 = add int %tmp.2, -32768         ; <int> [#uses=1]
+         ret int %tmp.3
+ }
+ 
+ int %test3(ushort %P) {
+         %tmp.1 = cast ushort %P to int          ; <int> [#uses=1]
+         %tmp.4 = xor int %tmp.1, 32768          ; <int> [#uses=1]
+         %tmp.5 = add int %tmp.4, -32768         ; <int> [#uses=1]
+         ret int %tmp.5
+ }
+ 
+ uint %test4(ushort %P) {
+         %tmp.1 = cast ushort %P to uint         ; <uint> [#uses=1]
+         %tmp.4 = xor uint %tmp.1, 32768         ; <uint> [#uses=1]
+         %tmp.5 = add uint %tmp.4, 4294934528            ; <uint> [#uses=1]
+         ret uint %tmp.5
+ }
+ 
+ int %test5(int %x) {
+ 	%tmp.1 = and int %x, 254
+ 	%tmp.2 = xor int %tmp.1, 128
+ 	%tmp.3 = add int %tmp.2, -128
+ 	ret int %tmp.3
+ }
+ 
+ int %test6(int %x) {
+         %tmp.2 = shl int %x, ubyte 16           ; <int> [#uses=1]
+         %tmp.4 = shr int %tmp.2, ubyte 16               ; <int> [#uses=1]
+         ret int %tmp.4
+ }