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testcase for recent dag combiner patch. Before the entry bb was:

Browse Source 
_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr7, r2, 2
        mfcr r2
        rlwinm r2, r2, 30, 31, 31
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

after it is:

_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr0, r2, 2
        bgt cr0, LBB1_2 ;UnifiedReturnBlock


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30954 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-14 03:40:02 +00:00
parent 8ac9d0ebde
commit 4c1984d9e8
1 changed files with 16 additions and 0 deletions
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16
test/CodeGen/PowerPC/cmp-cmp.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=ppc32 &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep mfcr
void %test(long %X) {
%tmp1 = and long %X, 3 ; <long> [#uses=1]
%tmp = setgt long %tmp1, 2 ; <bool> [#uses=1]
br bool %tmp, label %UnifiedReturnBlock, label %cond_true
cond_true: ; preds = %entry
tail call void %test(long 0)
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}