a20c852148
Also, say "guard-offset pages" rather than just "guard pages" to describe the region of a heap which is never accessible and which exists to support optimizations for heap accesses with offsets. And, introduce a `Uimm64` immediate type, and make all heap fields use `Uimm64` instead of `Imm64` since they really are unsigned.
26 lines
638 B
Plaintext
26 lines
638 B
Plaintext
test simple-gvn
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target x86_64
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function %eliminate_redundant_global_loads(i32, i64 vmctx) {
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gv0 = vmctx
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gv1 = load.i64 notrap aligned readonly gv0
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heap0 = static gv1, min 0x1_0000, bound 0x1_0000_0000, offset_guard 0x8000_0000, index_type i32
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ebb0(v0: i32, v1: i64):
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v2 = heap_addr.i64 heap0, v0, 1
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v3 = heap_addr.i64 heap0, v0, 1
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v4 = iconst.i32 0
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store.i32 notrap aligned v4, v2
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store.i32 notrap aligned v4, v3
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return
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}
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; check: v2 = heap_addr.i64 heap0, v0, 1
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; check: v3 -> v2
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; check: v4 = iconst.i32 0
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; check: store notrap aligned v4, v2
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; check: store notrap aligned v4, v2
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; check: return
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