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91e00bac96
Summary: Teach LoopRotate to preserve MemorySSA. Enable tests for correctness, dependency disabled by default. Subscribers: sanjoy, jlebar, Prazek, george.burgess.iv, llvm-commits Differential Revision: https://reviews.llvm.org/D51718 llvm-svn: 345216
43 lines
1009 B
LLVM
Executable File
43 lines
1009 B
LLVM
Executable File
; RUN: opt < %s -loop-rotate -S | FileCheck %s
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; RUN: opt < %s -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s
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target triple = "x86_64-pc-windows-msvc"
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declare void @always_throws()
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define i32 @test() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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invoke void @always_throws()
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to label %continue unwind label %catch.dispatch
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continue:
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unreachable
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catch.dispatch:
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%t0 = catchswitch within none [label %catch] unwind to caller
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catch:
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%t1 = catchpad within %t0 [i8* null, i32 64, i8* null]
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catchret from %t1 to label %for.cond
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for.cond:
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%sum = phi i32 [ %add, %for.body ], [ 0, %catch ]
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%i = phi i32 [ %inc, %for.body ], [ 0, %catch ]
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%cmp = icmp slt i32 %i, 1
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br i1 %cmp, label %for.body, label %return
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for.body:
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%add = add nsw i32 1, %sum
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%inc = add nsw i32 %i, 1
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br label %for.cond
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return:
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ret i32 0
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}
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; CHECK: catch:
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; CHECK-NEXT: catchpad
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; CHECK-NEXT: catchret
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declare i32 @__CxxFrameHandler3(...)
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