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e9168c2be2
This was only added to preserve the old ScalarRepl's use of SSAUpdater which was originally to avoid use of dominance frontiers. Now, we only need a domtree, and we'll need a domtree right after this pass as well and so it makes perfect sense to always and only use the dom-tree powered mem2reg. This was flag-flipper earlier and has stuck reasonably so I wanted to gut the now-dead code out of SROA before we waste more time with it. Among other things, this will make passmanager porting easier. llvm-svn: 246028
49 lines
1.5 KiB
LLVM
49 lines
1.5 KiB
LLVM
; RUN: opt < %s -sroa -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-n8:16:32:64"
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define { i32, i32 } @test0(i32 %x, i32 %y) {
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; CHECK-LABEL: @test0(
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; CHECK-NOT: alloca
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; CHECK: insertvalue { i32, i32 }
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; CHECK: insertvalue { i32, i32 }
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; CHECK: ret { i32, i32 }
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entry:
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%a = alloca { i32, i32 }
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store { i32, i32 } undef, { i32, i32 }* %a
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%gep1 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %a, i32 0, i32 0
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store i32 %x, i32* %gep1
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%gep2 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %a, i32 0, i32 1
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store i32 %y, i32* %gep2
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%result = load { i32, i32 }, { i32, i32 }* %a
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ret { i32, i32 } %result
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}
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define { i32, i32 } @test1(i32 %x, i32 %y) {
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; FIXME: This may be too conservative. Duncan argues that we are allowed to
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; split the volatile load and store here but must produce volatile scalar loads
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; and stores from them.
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; CHECK-LABEL: @test1(
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; CHECK: alloca
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; CHECK: alloca
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; CHECK: load volatile { i32, i32 }, { i32, i32 }*
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; CHECK: store volatile { i32, i32 }
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; CHECK: ret { i32, i32 }
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entry:
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%a = alloca { i32, i32 }
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%b = alloca { i32, i32 }
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%gep1 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %a, i32 0, i32 0
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store i32 %x, i32* %gep1
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%gep2 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %a, i32 0, i32 1
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store i32 %y, i32* %gep2
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%result = load volatile { i32, i32 }, { i32, i32 }* %a
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store volatile { i32, i32 } %result, { i32, i32 }* %b
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ret { i32, i32 } %result
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}
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