71 lines
3.0 KiB
LLVM
71 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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; RUN: llc -global-isel -mtriple=arm64-windows -stop-after=irtranslator -o - %s | FileCheck %s
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define void @local_escape() {
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; CHECK-LABEL: name: local_escape
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; CHECK: bb.1 (%ir-block.0):
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; CHECK: LOCAL_ESCAPE <mcsymbol .Llocal_escape$frame_escape_1>, %stack.1.b
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; CHECK: LOCAL_ESCAPE <mcsymbol .Llocal_escape$frame_escape_0>, %stack.0.a
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; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
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; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 13
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; CHECK: [[FRAME_INDEX:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0.a
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; CHECK: [[FRAME_INDEX1:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.1.b
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; CHECK: G_STORE [[C]](s32), [[FRAME_INDEX]](p0) :: (store 4 into %ir.a)
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; CHECK: G_STORE [[C1]](s32), [[FRAME_INDEX1]](p0) :: (store 4 into %ir.b)
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; CHECK: RET_ReallyLR
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%a = alloca i32
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%b = alloca i32, i32 2
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call void (...) @llvm.localescape(i32* %a, i32* %b)
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store i32 42, i32* %a
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store i32 13, i32* %b
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ret void
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}
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; Try some instructions before the localescape, and use a null
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define void @local_escape_insert_point() {
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; CHECK-LABEL: name: local_escape_insert_point
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; CHECK: bb.1 (%ir-block.0):
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; CHECK: LOCAL_ESCAPE <mcsymbol .Llocal_escape_insert_point$frame_escape_2>, %stack.1.b
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; CHECK: LOCAL_ESCAPE <mcsymbol .Llocal_escape_insert_point$frame_escape_0>, %stack.0.a
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; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
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; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 13
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; CHECK: [[FRAME_INDEX:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0.a
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; CHECK: [[FRAME_INDEX1:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.1.b
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; CHECK: G_STORE [[C]](s32), [[FRAME_INDEX]](p0) :: (store 4 into %ir.a)
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; CHECK: G_STORE [[C1]](s32), [[FRAME_INDEX1]](p0) :: (store 4 into %ir.b)
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; CHECK: RET_ReallyLR
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%a = alloca i32
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%b = alloca i32, i32 2
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store i32 42, i32* %a
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store i32 13, i32* %b
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call void (...) @llvm.localescape(i32* %a, i32* null, i32* %b)
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ret void
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}
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declare void @foo([128 x i32]*)
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; Check a cast of an alloca
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define void @local_escape_strip_ptr_cast() {
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; CHECK-LABEL: name: local_escape_strip_ptr_cast
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; CHECK: bb.1 (%ir-block.0):
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; CHECK: LOCAL_ESCAPE <mcsymbol .Llocal_escape_strip_ptr_cast$frame_escape_0>, %stack.0.a
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; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
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; CHECK: [[FRAME_INDEX:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0.a
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; CHECK: G_STORE [[C]](s32), [[FRAME_INDEX]](p0) :: (store 4 into %ir.cast)
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; CHECK: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
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; CHECK: $x0 = COPY [[FRAME_INDEX]](p0)
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; CHECK: BL @foo, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $x0
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; CHECK: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
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; CHECK: RET_ReallyLR
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%a = alloca [128 x i32]
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%cast = bitcast [128 x i32]* %a to i32*
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store i32 42, i32* %cast
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call void (...) @llvm.localescape(i32* %cast, i32* null)
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call void @foo([128 x i32]* %a)
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ret void
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}
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declare void @llvm.localescape(...) #0
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attributes #0 = { nounwind }
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