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[WebAssembly] Add a resize_memory intrinsic.

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llvm-svn: 249178
This commit is contained in:
Dan Gohman 2015-10-02 20:10:26 +00:00
parent c9da733387
commit d6b9e09e7d
4 changed files with 29 additions and 0 deletions
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1
include/llvm/IR/IntrinsicsWebAssembly.td
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@ -16,5 +16,6 @@ let TargetPrefix = "wasm" in { // All intrinsics start with "llvm.wasm.".
def int_wasm_page_size : Intrinsic<[llvm_anyint_ty], [], [IntrNoMem]>;
def int_wasm_memory_size : Intrinsic<[llvm_anyint_ty], [], [IntrNoMem]>;
def int_wasm_resize_memory : Intrinsic<[], [llvm_anyint_ty], []>;
}

8
lib/Target/WebAssembly/WebAssemblyInstrMemory.td
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@ -106,3 +106,11 @@ def memory_size_I32 : I<(outs I32:$dst), (ins),
def memory_size_I64 : I<(outs I64:$dst), (ins),
[(set I64:$dst, (int_wasm_memory_size))]>,
Requires<[HasAddr64]>;
// Resize memory.
def resize_memory_I32 : I<(outs), (ins I32:$delta),
[(int_wasm_resize_memory I32:$delta)]>,
Requires<[HasAddr32]>;
def resize_memory_I64 : I<(outs), (ins I64:$delta),
[(int_wasm_resize_memory I64:$delta)]>,
Requires<[HasAddr64]>;

10
test/CodeGen/WebAssembly/memory-addr32.ll
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@ -7,6 +7,7 @@ target triple = "wasm32-unknown-unknown"
declare i32 @llvm.wasm.page.size.i32() nounwind readnone
declare i32 @llvm.wasm.memory.size.i32() nounwind readnone
declare void @llvm.wasm.resize.memory.i32(i32) nounwind
; CHECK-LABEL: (func $page_size
; CHECK-NEXT: (result i32)
@ -25,3 +26,12 @@ define i32 @memory_size() {
%a = call i32 @llvm.wasm.memory.size.i32()
ret i32 %a
}
; CHECK-LABEL: (func $resize_memory
; CHECK-NEXT: (param i32)
; CHECK: (resize_memory @0)
; CHECK-NEXT: (return)
define void @resize_memory(i32 %n) {
call void @llvm.wasm.resize.memory.i32(i32 %n)
ret void
}

10
test/CodeGen/WebAssembly/memory-addr64.ll
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@ -7,6 +7,7 @@ target triple = "wasm64-unknown-unknown"
declare i64 @llvm.wasm.page.size.i64() nounwind readnone
declare i64 @llvm.wasm.memory.size.i64() nounwind readnone
declare void @llvm.wasm.resize.memory.i64(i64) nounwind
; CHECK-LABEL: (func $page_size
; CHECK-NEXT: (result i64)
@ -25,3 +26,12 @@ define i64 @memory_size() {
%a = call i64 @llvm.wasm.memory.size.i64()
ret i64 %a
}
; CHECK-LABEL: (func $resize_memory
; CHECK-NEXT: (param i64)
; CHECK: (resize_memory @0)
; CHECK-NEXT: (return)
define void @resize_memory(i64 %n) {
call void @llvm.wasm.resize.memory.i64(i64 %n)
ret void
}