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cdfa9dadf1
array indexes. The "complex" case of SRoA still handles them, and correctly. This fixes a weirdness where we'd correctly avoid transforming A[0][42] if the 42 was too large, but we'd only do it if it was one gep, not two separate ones. llvm-svn: 90007
58 lines
1.7 KiB
LLVM
58 lines
1.7 KiB
LLVM
; RUN: opt < %s -scalarrepl -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
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target triple = "i386-pc-linux-gnu"
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; PR3466
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; Off end of array, don't transform.
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define i32 @test1() {
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; CHECK: @test1
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; CHECK-NOT: = alloca
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%X = alloca [4 x i32]
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%Y = getelementptr [4 x i32]* %X, i64 0, i64 6 ; <i32*> [#uses=2]
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store i32 0, i32* %Y
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%Z = load i32* %Y ; <i32> [#uses=1]
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ret i32 %Z
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}
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; Off end of array, don't transform.
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define i32 @test2() nounwind {
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entry:
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; CHECK: @test2
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; CHECK-NOT: = alloca
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%yx2.i = alloca float, align 4 ; <float*> [#uses=1]
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%yx26.i = bitcast float* %yx2.i to i64* ; <i64*> [#uses=1]
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%0 = load i64* %yx26.i, align 8 ; <i64> [#uses=0]
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unreachable
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}
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%base = type { i32, [0 x i8] }
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%padded = type { %base, [1 x i32] }
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; PR5436
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define void @test3() {
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entry:
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; CHECK: @test3
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; CHECK-NOT: = alloca
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; CHECK: store i64
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%var_1 = alloca %padded, align 8 ; <%padded*> [#uses=3]
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%0 = getelementptr inbounds %padded* %var_1, i32 0, i32 0 ; <%base*> [#uses=2]
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%p2 = getelementptr inbounds %base* %0, i32 0, i32 1, i32 0 ; <i8*> [#uses=1]
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store i8 72, i8* %p2, align 1
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; 72 -> a[0].
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%callret = call %padded *@test3f() ; <i32> [#uses=2]
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%callretcast = bitcast %padded* %callret to i8* ; <i8*> [#uses=1]
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%var_11 = bitcast %padded* %var_1 to i8* ; <i8*> [#uses=1]
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call void @llvm.memcpy.i32(i8* %callretcast, i8* %var_11, i32 8, i32 4)
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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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declare %padded* @test3f()
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