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[ppc] add tests to show potential andc optimization

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llvm-svn: 266261
This commit is contained in:
Sanjay Patel 2016-04-13 23:23:30 +00:00
parent 3d26dcef22
commit 4fd6cc9cca
1 changed files with 36 additions and 0 deletions
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36
test/CodeGen/PowerPC/andc.ll Normal file
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; RUN: llc < %s -mtriple=powerpc64-apple-darwin | FileCheck %s
; TODO: These could use 'andc'.
define i1 @and_cmp1(i32 %x, i32 %y) {
; CHECK-LABEL: and_cmp1:
; CHECK: ; BB#0:
; CHECK-NEXT: and r2, r3, r4
; CHECK-NEXT: li r3, 1
; CHECK-NEXT: cmpw cr0, r2, r4
; CHECK-NEXT: bclr 12, 2, 0
; CHECK-NEXT: ; BB#1:
; CHECK-NEXT: li r3, 0
; CHECK-NEXT: blr
;
%and = and i32 %x, %y
%cmp = icmp eq i32 %and, %y
ret i1 %cmp
}
define i1 @and_cmp_const(i32 %x) {
; CHECK-LABEL: and_cmp_const:
; CHECK: ; BB#0:
; CHECK-NEXT: andi. r2, r3, 43
; CHECK-NEXT: li r3, 1
; CHECK-NEXT: cmpwi r2, 43
; CHECK-NEXT: bclr 12, 2, 0
; CHECK-NEXT: ; BB#1:
; CHECK-NEXT: li r3, 0
; CHECK-NEXT: blr
;
%and = and i32 %x, 43
%cmp = icmp eq i32 %and, 43
ret i1 %cmp
}