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Add a testcase for pr17852. 

llvm-svn: 194385
This commit is contained in:
Rafael Espindola 2013-11-11 15:37:52 +00:00
parent c6a243987d
commit 9d34018954
1 changed files with 66 additions and 0 deletions
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llvm/test/Transforms/GVN/pr17852.ll Normal file
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; RUN: opt < %s -basicaa -gvn
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
%struct.S0 = type { [2 x i8], [2 x i8], [4 x i8], [2 x i8], i32, i32, i32, i32 }
define void @fn1(%struct.S0* byval align 8 %p1) {
br label %for.cond
for.cond: ; preds = %1, %0
br label %for.end
%f2 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 2
%f9 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 7
br label %for.cond
for.end: ; preds = %for.cond
br i1 true, label %if.else, label %if.then
if.then: ; preds = %for.end
%f22 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 2
%f7 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 5
%tmp7 = load i32* %f7, align 8
br label %if.end40
if.else: ; preds = %for.end
br i1 false, label %for.cond18, label %if.then6
if.then6: ; preds = %if.else
%f3 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 2
%tmp10 = bitcast %struct.S0* %p1 to i16*
%f5 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 3
%tmp11 = bitcast [2 x i8]* %f5 to i16*
%bf.load13 = load i16* %tmp11, align 8
br label %if.end36
for.cond18: ; preds = %if.else
call void @fn4()
br i1 true, label %if.end, label %if.end36
if.end: ; preds = %for.cond18
%f321 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 2
%f925 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 7
%f526 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 3
%tmp15 = bitcast [2 x i8]* %f526 to i16*
%bf.load27 = load i16* %tmp15, align 8
%tmp16 = bitcast %struct.S0* %p1 to i16*
br label %if.end36
if.end36: ; preds = %if.end, %for.cond18, %if.then6
%f537 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 3
%tmp17 = bitcast [2 x i8]* %f537 to i16*
%bf.load38 = load i16* %tmp17, align 8
%bf.clear39 = and i16 %bf.load38, -16384
br label %if.end40
if.end40: ; preds = %if.end36, %if.then
%f6 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 4
%tmp18 = load i32* %f6, align 4
call void @fn2(i32 %tmp18)
%f8 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 6
%tmp19 = load i32* %f8, align 4
%tobool41 = icmp eq i32 %tmp19, 0
br i1 true, label %if.end50, label %if.then42
if.then42: ; preds = %if.end40
%tmp20 = bitcast %struct.S0* %p1 to i16*
%f547 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 3
%tmp21 = bitcast [2 x i8]* %f547 to i16*
%bf.load48 = load i16* %tmp21, align 8
br label %if.end50
if.end50: ; preds = %if.then42, %if.end40
%f551 = getelementptr inbounds %struct.S0* %p1, i64 0, i32 3
%tmp22 = bitcast [2 x i8]* %f551 to i16*
%bf.load52 = load i16* %tmp22, align 8
%bf.clear53 = and i16 %bf.load52, -16384
ret void
}
declare void @fn2(i32)
declare void @fn4()