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
+ }
+
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