[NFC] Use opaqueptr in llvm/test/Transforms/SimplifyCFG/preserve-llvm-loop-metadata.ll

[mingmingl]

Summary

Use opaqueptr for test case
llvm/test/Transforms/SimplifyCFG/preserve-llvm-loop-metadata.ll.

• Adjust variable number accordingly since bitcast between different pointer types are not necessary.

[fhahn]

LGTM, thanks!

[mingmingl]

Thanks! Going to submit.

llvm/test/Transforms/SimplifyCFG/preserve-llvm-loop-metadata.ll

 ; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -keep-loops=false -S < %s | FileCheck %s
 ; RUN: opt -passes='simplifycfg<no-keep-loops>' -S < %s | FileCheck %s
 
 define void @test1(i32 %n) #0 {
 entry:
   %n.addr = alloca i32, align 4
   %count = alloca i32, align 4
-  store i32 %n, i32* %n.addr, align 4
-  %0 = bitcast i32* %count to i8*
-  store i32 0, i32* %count, align 4
+  store i32 %n, ptr %n.addr, align 4
+  store i32 0, ptr %count, align 4
   br label %while.cond
 
 while.cond:                                       ; preds = %if.end, %entry
-  %1 = load i32, i32* %count, align 4
-  %2 = load i32, i32* %n.addr, align 4
-  %cmp = icmp ule i32 %1, %2
+  %0 = load i32, ptr %count, align 4
+  %1 = load i32, ptr %n.addr, align 4
+  %cmp = icmp ule i32 %0, %1
   br i1 %cmp, label %while.body, label %while.end
 
 while.body:                                       ; preds = %while.cond
-  %3 = load i32, i32* %count, align 4
-  %rem = urem i32 %3, 2
+  %2 = load i32, ptr %count, align 4
+  %rem = urem i32 %2, 2
   %cmp1 = icmp eq i32 %rem, 0
   br i1 %cmp1, label %if.then, label %if.else
 
 if.then:                                          ; preds = %while.body
-  %4 = load i32, i32* %count, align 4
-  %add = add i32 %4, 1
-  store i32 %add, i32* %count, align 4
+  %3 = load i32, ptr %count, align 4
+  %add = add i32 %3, 1
+  store i32 %add, ptr %count, align 4
   br label %if.end
 
 ; CHECK: if.then:
 ; CHECK:  br label %while.cond, !llvm.loop !0
 
 if.else:                                          ; preds = %while.body
-  %5 = load i32, i32* %count, align 4
-  %add2 = add i32 %5, 2
-  store i32 %add2, i32* %count, align 4
+  %4 = load i32, ptr %count, align 4
+  %add2 = add i32 %4, 2
+  store i32 %add2, ptr %count, align 4
   br label %if.end
 
 ; CHECK: if.else:
 ; CHECK:  br label %while.cond, !llvm.loop !0
 
 if.end:                                           ; preds = %if.else, %if.then
   br label %while.cond, !llvm.loop !0
 
 while.end:                                        ; preds = %while.cond
-  %6 = bitcast i32* %count to i8*
   ret void
 }
 
 ; The test case is constructed based on the following C++ code,
 ; as a simplified test case to show why `llvm.loop.unroll.enable`
 ; could be dropped.
 ;
 ; While the C++ code itself might have the inner-loop unrolled (e.g., with -O3),

 ;        i += step;
 ;        #pragma unroll
 ;        for (int k = 0; k < kUnroll; k++) {
 ;           asm volatile ("add %w0, %w1\n" : "=r"(sum) : "r"(input[k + i]):"cc");
 ;        }
 ;    }
 ;    return sum;
 ; }
-define i32 @test2(i32 %a, i32 %b, i32 %step, i32 %remainder, i32* %input) {
+define i32 @test2(i32 %a, i32 %b, i32 %step, i32 %remainder, ptr %input) {
 entry:
   br label %while.cond
 
 while.cond.loopexit:                              ; preds = %for.body
   br label %while.cond, !llvm.loop !2
 
 while.cond:                                       ; preds = %while.cond.loopexit, %entry
   %i.0 = phi i32 [ %a, %entry ], [ %add, %while.cond.loopexit ]
   %sum.0 = phi i32 [ 0, %entry ], [ %1, %while.cond.loopexit ]
   %sub = sub nsw i32 %b, %i.0
   %cmp = icmp sgt i32 %sub, %remainder
   br i1 %cmp, label %while.body, label %while.end
 
 while.body:                                       ; preds = %while.cond
   %add = add nsw i32 %i.0, %step
   br label %for.body
 
 for.body:                                         ; preds = %while.body, %for.body
   %k.07 = phi i32 [ 0, %while.body ], [ %inc, %for.body ]
   %add2 = add nsw i32 %k.07, %add
   %idxprom = sext i32 %add2 to i64
-  %arrayidx = getelementptr inbounds i32, i32* %input, i64 %idxprom
-  %0 = load i32, i32* %arrayidx, align 4
+  %arrayidx = getelementptr inbounds i32, ptr %input, i64 %idxprom
+  %0 = load i32, ptr %arrayidx, align 4
   %1 = tail call i32 asm sideeffect "add ${0:w}, ${1:w}\0A", "=r,r,~{cc}"(i32 %0)
   %inc = add nuw nsw i32 %k.07, 1
   %cmp1 = icmp ult i32 %inc, 5
   br i1 %cmp1, label %for.body, label %while.cond.loopexit, !llvm.loop !4
 
 while.end:                                        ; preds = %while.cond
   %sum.0.lcssa = phi i32 [ %sum.0, %while.cond ]
   ret i32 %sum.0.lcssa