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	copied-in constant, as a subsequent user may rely on over alignment. Fixes PR12885. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157134 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			147 lines
		
	
	
		
			7.5 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
			
		
		
	
	
			147 lines
		
	
	
		
			7.5 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
| ; RUN: opt < %s -scalarrepl -S | FileCheck %s
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| target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
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| @C.0.1248 = internal constant [128 x float] [ float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 ], align 32		; <[128 x float]*> [#uses=1]
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| 
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| define float @test1(i32 %hash, float %x, float %y, float %z, float %w) {
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| entry:
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| 	%lookupTable = alloca [128 x float], align 16		; <[128 x float]*> [#uses=5]
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| 	%lookupTable1 = bitcast [128 x float]* %lookupTable to i8*		; <i8*> [#uses=1]
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| 	call void @llvm.memcpy.i32( i8* %lookupTable1, i8* bitcast ([128 x float]* @C.0.1248 to i8*), i32 512, i32 16 )
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|         
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| ; CHECK: @test1
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| ; CHECK-NOT: alloca
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| ; CHECK-NOT: call{{.*}}@llvm.memcpy
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| ; CHECK: %lookupTable1 = bitcast [128 x float]* @C.0.1248 to i8*
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| ; CHECK-NOT: call{{.*}}@llvm.memcpy
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|         
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| 	%tmp3 = shl i32 %hash, 2		; <i32> [#uses=1]
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| 	%tmp5 = and i32 %tmp3, 124		; <i32> [#uses=4]
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| 	%tmp753 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp5		; <float*> [#uses=1]
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| 	%tmp9 = load float* %tmp753		; <float> [#uses=1]
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| 	%tmp11 = fmul float %tmp9, %x		; <float> [#uses=1]
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| 	%tmp13 = fadd float %tmp11, 0.000000e+00		; <float> [#uses=1]
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| 	%tmp17.sum52 = or i32 %tmp5, 1		; <i32> [#uses=1]
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| 	%tmp1851 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp17.sum52		; <float*> [#uses=1]
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| 	%tmp19 = load float* %tmp1851		; <float> [#uses=1]
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| 	%tmp21 = fmul float %tmp19, %y		; <float> [#uses=1]
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| 	%tmp23 = fadd float %tmp21, %tmp13		; <float> [#uses=1]
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| 	%tmp27.sum50 = or i32 %tmp5, 2		; <i32> [#uses=1]
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| 	%tmp2849 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp27.sum50		; <float*> [#uses=1]
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| 	%tmp29 = load float* %tmp2849		; <float> [#uses=1]
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| 	%tmp31 = fmul float %tmp29, %z		; <float> [#uses=1]
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| 	%tmp33 = fadd float %tmp31, %tmp23		; <float> [#uses=1]
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| 	%tmp37.sum48 = or i32 %tmp5, 3		; <i32> [#uses=1]
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| 	%tmp3847 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp37.sum48		; <float*> [#uses=1]
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| 	%tmp39 = load float* %tmp3847		; <float> [#uses=1]
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| 	%tmp41 = fmul float %tmp39, %w		; <float> [#uses=1]
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| 	%tmp43 = fadd float %tmp41, %tmp33		; <float> [#uses=1]
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| 	ret float %tmp43
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| }
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| 
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| declare void @llvm.memcpy.i32(i8*, i8*, i32, i32)
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| 
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| 
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| 
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| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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| 
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| %T = type { i8, [123 x i8] }
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| %U = type { i32, i32, i32, i32, i32 }
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| 
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| @G = constant %T {i8 1, [123 x i8] zeroinitializer }
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| @H = constant [2 x %U] zeroinitializer, align 16
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| 
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| define void @test2() {
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|   %A = alloca %T
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|   %B = alloca %T
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|   %a = bitcast %T* %A to i8*
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|   %b = bitcast %T* %B to i8*
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| 
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| ; CHECK: @test2
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| 
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| ; %A alloca is deleted
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| ; CHECK-NEXT: %B = alloca %T
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| 
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| ; use @G instead of %A
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| ; CHECK-NEXT: %a = bitcast %T* @G to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %a, i64 124, i32 4, i1 false)
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|   call void @bar(i8* %b)
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|   ret void
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| }
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| 
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| declare void @bar(i8*)
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| 
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| 
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| ;; Should be able to eliminate the alloca.
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| define void @test3() {
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|   %A = alloca %T
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|   %a = bitcast %T* %A to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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|   call void @bar(i8* %a) readonly
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| ; CHECK: @test3
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| ; CHECK-NEXT: %a = bitcast %T* @G to i8*
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| ; CHECK-NEXT: call void @bar(i8* %a)
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|   ret void
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| }
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| 
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| define void @test4() {
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|   %A = alloca %T
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|   %a = bitcast %T* %A to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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|   call void @baz(i8* byval %a) 
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| ; CHECK: @test4
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| ; CHECK-NEXT: %a = bitcast %T* @G to i8*
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| ; CHECK-NEXT: call void @baz(i8* byval %a)
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|   ret void
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| }
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| 
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| declare void @llvm.lifetime.start(i64, i8*)
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| define void @test5() {
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|   %A = alloca %T
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|   %a = bitcast %T* %A to i8*
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|   call void @llvm.lifetime.start(i64 -1, i8* %a)
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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|   call void @baz(i8* byval %a) 
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| ; CHECK: @test5
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| ; CHECK-NEXT: %a = bitcast %T* @G to i8*
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| ; CHECK-NEXT: call void @baz(i8* byval %a)
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|   ret void
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| }
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| 
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| 
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| declare void @baz(i8* byval)
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| 
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| 
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| define void @test6() {
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|   %A = alloca %U, align 16
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|   %a = bitcast %U* %A to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast ([2 x %U]* @H to i8*), i64 20, i32 16, i1 false)
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|   call void @bar(i8* %a) readonly
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| ; CHECK: @test6
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| ; CHECK-NEXT: %a = bitcast
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| ; CHECK-NEXT: call void @bar(i8* %a)
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|   ret void
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| }
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| 
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| define void @test7() {
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|   %A = alloca %U, align 16
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|   %a = bitcast %U* %A to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%U* getelementptr ([2 x %U]* @H, i64 0, i32 0) to i8*), i64 20, i32 4, i1 false)
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|   call void @bar(i8* %a) readonly
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| ; CHECK: @test7
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| ; CHECK-NEXT: %a = bitcast
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| ; CHECK-NEXT: call void @bar(i8* %a)
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|   ret void
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| }
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| 
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| define void @test8() {
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|   %A = alloca %U, align 16
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|   %a = bitcast %U* %A to i8*
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|   call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%U* getelementptr ([2 x %U]* @H, i64 0, i32 1) to i8*), i64 20, i32 4, i1 false)
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|   call void @bar(i8* %a) readonly
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| ; CHECK: @test8
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| ; CHECK: llvm.memcpy
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| ; CHECK: bar
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|   ret void
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| }
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