45 lines
1.1 KiB
LLVM
45 lines
1.1 KiB
LLVM
; RUN: opt -passes='print<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
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; TODO: The load's MemoryUse can be defined by liveOnEntry. Since
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; %p2 is a loop invariant and the MemoryLoc of load instr and store inst in
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; loop block are NoAlias
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;
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; CHECK: MemoryUse(2)
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; CHECK: %val = load i32, ptr %p2
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define void @gep(ptr %ptr) {
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entry:
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%p1 = getelementptr i32, ptr %ptr, i32 1
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br label %tmp
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tmp:
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%p2 = getelementptr i32, ptr %p1, i32 1
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br label %loop
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loop:
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%x = phi i32 [ 0, %tmp ], [ %x.inc, %loop ]
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%val = load i32, ptr %p2
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%p3 = getelementptr i32, ptr %p2, i32 1
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store volatile i32 0, ptr %p3
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%x.inc = add i32 %x, %val
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br label %loop
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}
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; CHECK: MemoryUse(2)
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; CHECK-NEXT: %val = load i32, ptr %p2
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define void @load_entry_block(ptr %ptr, ptr %addr) {
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entry:
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%p1 = load ptr, ptr %ptr
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br label %tmp
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tmp:
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%p2 = getelementptr i32, ptr %p1, i32 1
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br label %loop
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loop:
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%x = phi i32 [ 0, %tmp ], [ %x.inc, %loop ]
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%val = load i32, ptr %p2
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%p3 = getelementptr i32, ptr %p2, i32 1
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store volatile i32 0, ptr %p3
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%x.inc = add i32 %x, %val
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br label %loop
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}
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