[llvm-commits] CVS: llvm/test/CodeGen/PowerPC/rotl-2.ll

[Chris Lattner]

Changes in directory llvm/test/CodeGen/PowerPC:

rotl-2.ll added (r1.1)
---
Log message:

Add a regtest for cases we now recognize as rotates, thanks to Scott Michel's
recent dagcombine patch



---
Diffs of the changes:  (+38 -0)

 rotl-2.ll |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+)


Index: llvm/test/CodeGen/PowerPC/rotl-2.ll
diff -c /dev/null llvm/test/CodeGen/PowerPC/rotl-2.ll:1.1
*** /dev/null	Mon Apr  2 17:09:04 2007
--- llvm/test/CodeGen/PowerPC/rotl-2.ll	Mon Apr  2 17:08:54 2007
***************
*** 0 ****
--- 1,38 ----
+ ; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwinm | wc -l | grep 4 &&
+ ; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwnm | wc -l | grep 2 &&
+ ; RUN: llvm-as < %s | llc -march=ppc32 | not grep or
+ 
+ define i32 @rotl32(i32 %A, i8 %Amt) {
+ 	%shift.upgrd.1 = zext i8 %Amt to i32		; <i32> [#uses=1]
+ 	%B = shl i32 %A, %shift.upgrd.1		; <i32> [#uses=1]
+ 	%Amt2 = sub i8 32, %Amt		; <i8> [#uses=1]
+ 	%shift.upgrd.2 = zext i8 %Amt2 to i32		; <i32> [#uses=1]
+ 	%C = lshr i32 %A, %shift.upgrd.2		; <i32> [#uses=1]
+ 	%D = or i32 %B, %C		; <i32> [#uses=1]
+ 	ret i32 %D
+ }
+ 
+ define i32 @rotr32(i32 %A, i8 %Amt) {
+ 	%shift.upgrd.3 = zext i8 %Amt to i32		; <i32> [#uses=1]
+ 	%B = lshr i32 %A, %shift.upgrd.3		; <i32> [#uses=1]
+ 	%Amt2 = sub i8 32, %Amt		; <i8> [#uses=1]
+ 	%shift.upgrd.4 = zext i8 %Amt2 to i32		; <i32> [#uses=1]
+ 	%C = shl i32 %A, %shift.upgrd.4		; <i32> [#uses=1]
+ 	%D = or i32 %B, %C		; <i32> [#uses=1]
+ 	ret i32 %D
+ }
+ 
+ define i32 @rotli32(i32 %A) {
+ 	%B = shl i32 %A, 5		; <i32> [#uses=1]
+ 	%C = lshr i32 %A, 27		; <i32> [#uses=1]
+ 	%D = or i32 %B, %C		; <i32> [#uses=1]
+ 	ret i32 %D
+ }
+ 
+ define i32 @rotri32(i32 %A) {
+ 	%B = lshr i32 %A, 5		; <i32> [#uses=1]
+ 	%C = shl i32 %A, 27		; <i32> [#uses=1]
+ 	%D = or i32 %B, %C		; <i32> [#uses=1]
+ 	ret i32 %D
+ }
+