mirror of
https://github.com/c64scene-ar/llvm-6502.git
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73a1b67cb9
While scanning through the uses of an alloca, keep track of the current offset relative to the start of the alloca, and check memory references to see if the offset & size correspond to a component within the alloca. This has the nice benefit of unifying much of the code from isSafeUseOfAllocation, isSafeElementUse, and isSafeUseOfBitCastedAllocation. The code to rewrite the uses of a promoted alloca, after it is determined to be safe, is reorganized in the same way. Also, when rewriting GEP instructions, mark them as "in-bounds" since all the indices are known to be safe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91184 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
4.1 KiB
LLVM
69 lines
4.1 KiB
LLVM
; RUN: opt < %s -scalarrepl -S | FileCheck %s
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; Radar 7441282
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32"
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target triple = "thumbv7-apple-darwin10"
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%struct.__neon_int16x8x2_t = type { <8 x i16>, <8 x i16> }
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%struct.int16x8_t = type { <8 x i16> }
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%struct.int16x8x2_t = type { [2 x %struct.int16x8_t] }
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%union..0anon = type { %struct.int16x8x2_t }
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define arm_apcscc void @test(<8 x i16> %tmp.0, %struct.int16x8x2_t* %dst) nounwind {
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; CHECK: @test
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; CHECK-NOT: alloca
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; CHECK: "alloca point"
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entry:
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%tmp_addr = alloca %struct.int16x8_t ; <%struct.int16x8_t*> [#uses=3]
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%dst_addr = alloca %struct.int16x8x2_t* ; <%struct.int16x8x2_t**> [#uses=2]
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%__rv = alloca %union..0anon ; <%union..0anon*> [#uses=2]
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%__bx = alloca %struct.int16x8_t ; <%struct.int16x8_t*> [#uses=2]
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%__ax = alloca %struct.int16x8_t ; <%struct.int16x8_t*> [#uses=2]
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%tmp2 = alloca %struct.int16x8x2_t ; <%struct.int16x8x2_t*> [#uses=2]
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%0 = alloca %struct.int16x8x2_t ; <%struct.int16x8x2_t*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%1 = getelementptr inbounds %struct.int16x8_t* %tmp_addr, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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store <8 x i16> %tmp.0, <8 x i16>* %1
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store %struct.int16x8x2_t* %dst, %struct.int16x8x2_t** %dst_addr
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%2 = getelementptr inbounds %struct.int16x8_t* %__ax, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%3 = getelementptr inbounds %struct.int16x8_t* %tmp_addr, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%4 = load <8 x i16>* %3, align 16 ; <<8 x i16>> [#uses=1]
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store <8 x i16> %4, <8 x i16>* %2, align 16
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%5 = getelementptr inbounds %struct.int16x8_t* %__bx, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%6 = getelementptr inbounds %struct.int16x8_t* %tmp_addr, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%7 = load <8 x i16>* %6, align 16 ; <<8 x i16>> [#uses=1]
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store <8 x i16> %7, <8 x i16>* %5, align 16
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%8 = getelementptr inbounds %struct.int16x8_t* %__ax, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%9 = load <8 x i16>* %8, align 16 ; <<8 x i16>> [#uses=2]
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%10 = getelementptr inbounds %struct.int16x8_t* %__bx, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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%11 = load <8 x i16>* %10, align 16 ; <<8 x i16>> [#uses=2]
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%12 = getelementptr inbounds %union..0anon* %__rv, i32 0, i32 0 ; <%struct.int16x8x2_t*> [#uses=1]
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%13 = bitcast %struct.int16x8x2_t* %12 to %struct.__neon_int16x8x2_t* ; <%struct.__neon_int16x8x2_t*> [#uses=2]
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%14 = shufflevector <8 x i16> %9, <8 x i16> %11, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 4, i32 12, i32 6, i32 14> ; <<8 x i16>> [#uses=1]
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%15 = getelementptr inbounds %struct.__neon_int16x8x2_t* %13, i32 0, i32 0 ; <<8 x i16>*> [#uses=1]
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store <8 x i16> %14, <8 x i16>* %15
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%16 = shufflevector <8 x i16> %9, <8 x i16> %11, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 5, i32 13, i32 7, i32 15> ; <<8 x i16>> [#uses=1]
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%17 = getelementptr inbounds %struct.__neon_int16x8x2_t* %13, i32 0, i32 1 ; <<8 x i16>*> [#uses=1]
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store <8 x i16> %16, <8 x i16>* %17
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%18 = getelementptr inbounds %union..0anon* %__rv, i32 0, i32 0 ; <%struct.int16x8x2_t*> [#uses=1]
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%19 = bitcast %struct.int16x8x2_t* %0 to i8* ; <i8*> [#uses=1]
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%20 = bitcast %struct.int16x8x2_t* %18 to i8* ; <i8*> [#uses=1]
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call void @llvm.memcpy.i32(i8* %19, i8* %20, i32 32, i32 16)
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%tmp21 = bitcast %struct.int16x8x2_t* %tmp2 to i8* ; <i8*> [#uses=1]
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%21 = bitcast %struct.int16x8x2_t* %0 to i8* ; <i8*> [#uses=1]
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call void @llvm.memcpy.i32(i8* %tmp21, i8* %21, i32 32, i32 16)
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%22 = load %struct.int16x8x2_t** %dst_addr, align 4 ; <%struct.int16x8x2_t*> [#uses=1]
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%23 = bitcast %struct.int16x8x2_t* %22 to i8* ; <i8*> [#uses=1]
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%tmp22 = bitcast %struct.int16x8x2_t* %tmp2 to i8* ; <i8*> [#uses=1]
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call void @llvm.memcpy.i32(i8* %23, i8* %tmp22, i32 32, i32 16)
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br label %return
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; CHECK: store <8 x i16>
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; CHECK: store <8 x i16>
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return: ; preds = %entry
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ret void
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}
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declare void @llvm.memcpy.i32(i8* nocapture, i8* nocapture, i32, i32) nounwind
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