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minimize test and use FileCheck 

llvm-svn: 261701
This commit is contained in:
Sanjay Patel 2016-02-23 22:03:44 +00:00
parent 497a0ac23f
commit 55a2b24410
1 changed files with 18 additions and 32 deletions
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50
llvm/test/Transforms/InstCombine/zext-or-icmp.ll
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@ -1,35 +1,21 @@
; RUN: opt < %s -instcombine -S | grep icmp | count 1
; RUN: opt < %s -instcombine -S | FileCheck %s
%struct.FooBar = type <{ i8, i8, [2 x i8], i8, i8, i8, i8, i16, i16, [4 x i8], [8 x %struct.Rock] }>
%struct.Rock = type { i16, i16 }
@some_idx = internal constant [4 x i8] c"\0A\0B\0E\0F" ; <[4 x i8]*> [#uses=1]
; Remove an icmp by using its operand in the subsequent logic directly.
define zeroext i8 @t(%struct.FooBar* %up, i8 zeroext %intra_flag, i32 %blk_i) nounwind {
entry:
%tmp2 = lshr i32 %blk_i, 1 ; <i32> [#uses=1]
%tmp3 = and i32 %tmp2, 2 ; <i32> [#uses=1]
%tmp5 = and i32 %blk_i, 1 ; <i32> [#uses=1]
%tmp6 = or i32 %tmp3, %tmp5 ; <i32> [#uses=1]
%tmp8 = getelementptr %struct.FooBar, %struct.FooBar* %up, i32 0, i32 7 ; <i16*> [#uses=1]
%tmp9 = load i16, i16* %tmp8, align 1 ; <i16> [#uses=1]
%tmp910 = zext i16 %tmp9 to i32 ; <i32> [#uses=1]
%tmp12 = getelementptr [4 x i8], [4 x i8]* @some_idx, i32 0, i32 %tmp6 ; <i8*> [#uses=1]
%tmp13 = load i8, i8* %tmp12, align 1 ; <i8> [#uses=1]
%tmp1314 = zext i8 %tmp13 to i32 ; <i32> [#uses=1]
%tmp151 = lshr i32 %tmp910, %tmp1314 ; <i32> [#uses=1]
%tmp1516 = trunc i32 %tmp151 to i8 ; <i8> [#uses=1]
%tmp18 = getelementptr %struct.FooBar, %struct.FooBar* %up, i32 0, i32 0 ; <i8*> [#uses=1]
%tmp19 = load i8, i8* %tmp18, align 1 ; <i8> [#uses=1]
%tmp22 = and i8 %tmp1516, %tmp19 ; <i8> [#uses=1]
%tmp24 = getelementptr %struct.FooBar, %struct.FooBar* %up, i32 0, i32 0 ; <i8*> [#uses=1]
%tmp25 = load i8, i8* %tmp24, align 1 ; <i8> [#uses=1]
%tmp26.mask = and i8 %tmp25, 1 ; <i8> [#uses=1]
%toBool = icmp eq i8 %tmp26.mask, 0 ; <i1> [#uses=1]
%toBool.not = xor i1 %toBool, true ; <i1> [#uses=1]
%toBool33 = icmp eq i8 %intra_flag, 0 ; <i1> [#uses=1]
%bothcond = or i1 %toBool.not, %toBool33 ; <i1> [#uses=1]
%iftmp.1.0 = select i1 %bothcond, i8 0, i8 1 ; <i8> [#uses=1]
%tmp40 = or i8 %tmp22, %iftmp.1.0 ; <i8> [#uses=1]
%tmp432 = and i8 %tmp40, 1 ; <i8> [#uses=1]
ret i8 %tmp432
define i8 @zext_or_icmp_icmp(i8 %a, i8 %b) {
%mask = and i8 %a, 1
%toBool1 = icmp eq i8 %mask, 0
%toBool2 = icmp eq i8 %b, 0
%bothCond = or i1 %toBool1, %toBool2
%zext = zext i1 %bothCond to i8
ret i8 %zext
; CHECK-LABEL: zext_or_icmp_icmp(
; CHECK-NEXT: %mask = and i8 %a, 1
; CHECK-NEXT: %toBool2 = icmp eq i8 %b, 0
; CHECK-NEXT: %1 = xor i8 %mask, 1
; CHECK-NEXT: %toBool22 = zext i1 %toBool2 to i8
; CHECK-NEXT: %zext = or i8 %1, %toBool22
; CHECK-NEXT: ret i8 %zext
}