[llvm-commits] CVS: llvm/test/Regression/CodeGen/PowerPC/rlwinm.ll

[Jim Laskey]

Changes in directory llvm/test/Regression/CodeGen/PowerPC/rlwinm.ll

rlwinm.ll: 1.2 -> 1.3
---
Log message:

1. Changed the tests to guarantee that only rlwinm instructions are  
generated.


Test Cases
==========

int %test6(int %a) {
entry:
         %tmp.1 = and int %a, 65280               ; <int> [#uses=1]
         %tmp.2 = shr int %tmp.1, ubyte 8         ; <uint> [#uses=1]
         ret int %tmp.2
}

uint %test7(uint %a) {
entry:
         %tmp.1 = and uint %a, 65280              ; <uint> [#uses=1]
         %tmp.2 = shr uint %tmp.1, ubyte 8        ; <uint> [#uses=1]
         ret uint %tmp.2
}

int %test8(int %a) {
entry:
         %tmp.1 = and int %a, 16711680            ; <int> [#uses=1]
         %tmp.2 = shl int %tmp.1, ubyte 8         ; <int> [#uses=1]
         ret int %tmp.2
}


Old Result
==========

         .text
         .align  2
         .globl  _test6
_test6:
.LBB_test6_0:   ; entry
         rlwinm r2, r3, 0, 16, 23
         srawi r3, r2, 8
         blr


         .text
         .align  2
         .globl  _test7
_test7:
.LBB_test7_0:   ; entry
         rlwinm r2, r3, 0, 16, 23
         srwi r3, r2, 8
         blr


         .text
         .align  2
         .globl  _test8
_test8:
.LBB_test8_0:   ; entry
         rlwinm r2, r3, 0, 8, 15
         slwi r3, r2, 8
         blr


New Result
==========

         .text
         .align  2
         .globl  _test6
_test6:
.LBB_test6_0:   ; entry
         rlwinm r3, r3, 24, 24, 31
         blr


         .text
         .align  2
         .globl  _test7
_test7:
.LBB_test7_0:   ; entry
         rlwinm r3, r3, 24, 24, 31
         blr


         .text
         .align  2
         .globl  _test8
_test8:
.LBB_test8_0:   ; entry
         rlwinm r3, r3, 8, 0, 7
         blr



---
Diffs of the changes:  (+3 -0)

  PPC32ISelPattern.cpp
  1 files changed, 3 insertions(+), 0 deletions(-)


Index: test/Regression/CodeGen/PowerPC/rlwinm.ll
===================================================================
RCS file: /var/cvs/llvm/llvm/test/Regression/CodeGen/PowerPC/rlwinm.ll,v
retrieving revision 1.2
diff -u -d -b -w -r1.2 rlwinm.ll
--- test/Regression/CodeGen/PowerPC/rlwinm.ll   9 Aug 2005 20:24:16  
-0000       1.2
+++ test/Regression/CodeGen/PowerPC/rlwinm.ll   11 Aug 2005 21:48:56  
-0000
@@ -1,5 +1,8 @@
; All of these ands and shifts should be folded into rlwimi's
; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep and &&
+; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep srawi &&
+; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep srwi &&
+; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep slwi &&
; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | grep rlwinm | wc -l |  
grep 8