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[WebAssembly] Add a memory_size intrinsic.

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llvm-svn: 249171
This commit is contained in:
Dan Gohman 2015-10-02 19:21:15 +00:00
parent 93549f5707
commit b438d7cf7f
4 changed files with 29 additions and 0 deletions
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1
include/llvm/IR/IntrinsicsWebAssembly.td
View File

@ -15,5 +15,6 @@
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]>;
}

8
lib/Target/WebAssembly/WebAssemblyInstrMemory.td
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@ -98,3 +98,11 @@ def page_size_I32 : I<(outs I32:$dst), (ins),
def page_size_I64 : I<(outs I64:$dst), (ins),
[(set I64:$dst, (int_wasm_page_size))]>,
Requires<[HasAddr64]>;
// Memory size.
def memory_size_I32 : I<(outs I32:$dst), (ins),
[(set I32:$dst, (int_wasm_memory_size))]>,
Requires<[HasAddr32]>;
def memory_size_I64 : I<(outs I64:$dst), (ins),
[(set I64:$dst, (int_wasm_memory_size))]>,
Requires<[HasAddr64]>;

10
test/CodeGen/WebAssembly/memory-addr32.ll
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@ -6,6 +6,7 @@ target datalayout = "e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
declare i32 @llvm.wasm.page.size.i32() nounwind readnone
declare i32 @llvm.wasm.memory.size.i32() nounwind readnone
; CHECK-LABEL: (func $page_size
; CHECK-NEXT: (result i32)
@ -15,3 +16,12 @@ define i32 @page_size() {
%a = call i32 @llvm.wasm.page.size.i32()
ret i32 %a
}
; CHECK-LABEL: (func $memory_size
; CHECK-NEXT: (result i32)
; CHECK-NEXT: (setlocal @0 (memory_size))
; CHECK-NEXT: (return @0)
define i32 @memory_size() {
%a = call i32 @llvm.wasm.memory.size.i32()
ret i32 %a
}

10
test/CodeGen/WebAssembly/memory-addr64.ll
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@ -6,6 +6,7 @@ target datalayout = "e-p:64:64-i64:64-n32:64-S128"
target triple = "wasm64-unknown-unknown"
declare i64 @llvm.wasm.page.size.i64() nounwind readnone
declare i64 @llvm.wasm.memory.size.i64() nounwind readnone
; CHECK-LABEL: (func $page_size
; CHECK-NEXT: (result i64)
@ -15,3 +16,12 @@ define i64 @page_size() {
%a = call i64 @llvm.wasm.page.size.i64()
ret i64 %a
}
; CHECK-LABEL: (func $memory_size
; CHECK-NEXT: (result i64)
; CHECK-NEXT: (setlocal @0 (memory_size))
; CHECK-NEXT: (return @0)
define i64 @memory_size() {
%a = call i64 @llvm.wasm.memory.size.i64()
ret i64 %a
}