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[MergeICmp][NFC] Make test tuple-four-int8.ll more readable. 

llvm-svn: 315062
This commit is contained in:
Clement Courbet 2017-10-06 13:45:16 +00:00
parent a29dbdf2ca
commit 028d2eb671
1 changed files with 32 additions and 32 deletions
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64
llvm/test/Transforms/MergeICmps/tuple-four-int8.ll
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@ -20,54 +20,54 @@ define zeroext i1 @opeq(
%"class.std::tuple"* nocapture readonly dereferenceable(4) %a,
%"class.std::tuple"* nocapture readonly dereferenceable(4) %b) local_unnamed_addr #1 {
entry:
%0 = getelementptr inbounds %"class.std::tuple", %"class.std::tuple"* %a, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0
%add.ptr.i.i.i.i.i = getelementptr inbounds i8, i8* %0, i64 3
%1 = load i8, i8* %add.ptr.i.i.i.i.i, align 1
%2 = getelementptr inbounds %"class.std::tuple", %"class.std::tuple"* %b, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0
%add.ptr.i.i.i6.i.i = getelementptr inbounds i8, i8* %2, i64 3
%3 = load i8, i8* %add.ptr.i.i.i6.i.i, align 1
%cmp.i.i = icmp eq i8 %1, %3
br i1 %cmp.i.i, label %land.rhs.i.i, label %opeq.exit
%a.base = getelementptr inbounds %"class.std::tuple", %"class.std::tuple"* %a, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0
%a.elem3.addr = getelementptr inbounds i8, i8* %a.base, i64 3
%0 = load i8, i8* %a.elem3.addr, align 1
%b.base = getelementptr inbounds %"class.std::tuple", %"class.std::tuple"* %b, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0
%b.elem3.addr = getelementptr inbounds i8, i8* %b.base, i64 3
%1 = load i8, i8* %b.elem3.addr, align 1
%cmp.elem3 = icmp eq i8 %0, %1
br i1 %cmp.elem3, label %land.elem2, label %opeq.exit
land.rhs.i.i:
%add.ptr.i.i.i.i.i.i = getelementptr inbounds i8, i8* %0, i64 2
%4 = load i8, i8* %add.ptr.i.i.i.i.i.i, align 1
%add.ptr.i.i.i6.i.i.i = getelementptr inbounds i8, i8* %2, i64 2
%5 = load i8, i8* %add.ptr.i.i.i6.i.i.i, align 1
%cmp.i.i.i = icmp eq i8 %4, %5
br i1 %cmp.i.i.i, label %land.rhs.i.i.i, label %opeq.exit
land.elem2:
%a.elem2.addr = getelementptr inbounds i8, i8* %a.base, i64 2
%2 = load i8, i8* %a.elem2.addr, align 1
%b.elem2.addr = getelementptr inbounds i8, i8* %b.base, i64 2
%3 = load i8, i8* %b.elem2.addr, align 1
%cmp.elem2 = icmp eq i8 %2, %3
br i1 %cmp.elem2, label %land.elem1, label %opeq.exit
land.rhs.i.i.i:
%add.ptr.i.i.i.i.i.i.i = getelementptr inbounds i8, i8* %0, i64 1
%6 = load i8, i8* %add.ptr.i.i.i.i.i.i.i, align 1
%add.ptr.i.i.i6.i.i.i.i = getelementptr inbounds i8, i8* %2, i64 1
%7 = load i8, i8* %add.ptr.i.i.i6.i.i.i.i, align 1
%cmp.i.i.i.i = icmp eq i8 %6, %7
br i1 %cmp.i.i.i.i, label %land.rhs.i.i.i.i, label %opeq.exit
land.elem1:
%a.elem1.addr = getelementptr inbounds i8, i8* %a.base, i64 1
%4 = load i8, i8* %a.elem1.addr, align 1
%b.elem1.addr = getelementptr inbounds i8, i8* %b.base, i64 1
%5 = load i8, i8* %b.elem1.addr, align 1
%cmp.elem1 = icmp eq i8 %4, %5
br i1 %cmp.elem1, label %land.elem0, label %opeq.exit
land.rhs.i.i.i.i:
%8 = load i8, i8* %0, align 1
%9 = load i8, i8* %2, align 1
%cmp.i.i.i.i.i = icmp eq i8 %8, %9
land.elem0:
%6 = load i8, i8* %a.base, align 1
%7 = load i8, i8* %b.base, align 1
%cmp.elem0 = icmp eq i8 %6, %7
br label %opeq.exit
opeq.exit:
%10 = phi i1 [ false, %entry ], [ false, %land.rhs.i.i ], [ false, %land.rhs.i.i.i ], [ %cmp.i.i.i.i.i, %land.rhs.i.i.i.i ]
ret i1 %10
%8 = phi i1 [ false, %entry ], [ false, %land.elem2 ], [ false, %land.elem1 ], [ %cmp.elem0, %land.elem0 ]
ret i1 %8
; CHECK-LABEL: @opeq(
; The entry block is kept as is, but the next block is now the merged comparison
; block for bytes [1,2] or the block for the head.
; CHECK: entry
; CHECK: br i1 %cmp.i.i, label %land.rhs.i.i.i{{(.i)?}}, label %opeq.exit
; CHECK: br i1 %cmp.elem3, label %land.elem{{[01]}}, label %opeq.exit
; The two 1 byte loads and compares at offset 1 are replaced with a single
; 2-byte memcmp.
; CHECK: land.rhs.i.i.i
; CHECK: land.elem1
; CHECK: @memcmp({{.*}}2)
; CHECK: icmp eq {{.*}} 0
; In the end we have three blocks.
; CHECK: phi i1
; CHECK-SAME %entry
; CHECK-SAME %land.rhs.i.i.i.i
; CHECK-SAME %land.rhs.i.i.i
; CHECK-SAME %land.elem0
; CHECK-SAME %land.elem1
}