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erikdesjardinserikdesjardins
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use [N x i8] for alloca types
1 parent 4a0cc88 commit 270aaf7

28 files changed

+133
-85
lines changed

‎compiler/rustc_codegen_gcc/src/builder.rs

Lines changed: 4 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -897,26 +897,14 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
897897
self.gcc_checked_binop(oop, typ, lhs, rhs)
898898
}
899899

900-
fn alloca(&mut self, ty: Type<'gcc>, align: Align) -> RValue<'gcc> {
901-
// FIXME(antoyo): this check that we don't call get_aligned() a second time on a type.
902-
// Ideally, we shouldn't need to do this check.
903-
let aligned_type = if ty == self.cx.u128_type || ty == self.cx.i128_type {
904-
ty
905-
} else {
906-
ty.get_aligned(align.bytes())
907-
};
900+
fn alloca(&mut self, size: Size, align: Align) -> RValue<'gcc> {
901+
let ty = self.cx.type_array(self.cx.type_i8(), size.bytes()).get_aligned(align.bytes());
908902
// TODO(antoyo): It might be better to return a LValue, but fixing the rustc API is non-trivial.
909903
self.stack_var_count.set(self.stack_var_count.get() + 1);
910-
self.current_func()
911-
.new_local(
912-
self.location,
913-
aligned_type,
914-
&format!("stack_var_{}", self.stack_var_count.get()),
915-
)
916-
.get_address(self.location)
904+
self.current_func().new_local(None, ty, &format!("stack_var_{}", self.stack_var_count.get())).get_address(None)
917905
}
918906

919-
fn byte_array_alloca(&mut self, _len: RValue<'gcc>, _align: Align) -> RValue<'gcc> {
907+
fn dynamic_alloca(&mut self, _len: RValue<'gcc>, _align: Align) -> RValue<'gcc> {
920908
unimplemented!();
921909
}
922910

‎compiler/rustc_codegen_gcc/src/intrinsic/mod.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -530,7 +530,7 @@ impl<'gcc, 'tcx> ArgAbiExt<'gcc, 'tcx> for ArgAbi<'tcx, Ty<'tcx>> {
530530
// We instead thus allocate some scratch space...
531531
let scratch_size = cast.size(bx);
532532
let scratch_align = cast.align(bx);
533-
let llscratch = bx.alloca(cast.gcc_type(bx), scratch_align);
533+
let llscratch = bx.alloca(scratch_size, scratch_align);
534534
bx.lifetime_start(llscratch, scratch_size);
535535

536536
// ... where we first store the value...

‎compiler/rustc_codegen_gcc/src/intrinsic/simd.rs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@ use rustc_middle::span_bug;
1818
use rustc_middle::ty::layout::HasTyCtxt;
1919
use rustc_middle::ty::{self, Ty};
2020
use rustc_span::{sym, Span, Symbol};
21-
use rustc_target::abi::Align;
21+
use rustc_target::abi::{Align, Size};
2222

2323
use crate::builder::Builder;
2424
#[cfg(not(feature = "master"))]
@@ -558,7 +558,7 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
558558
let ze = bx.zext(result, bx.type_ix(expected_bytes * 8));
559559

560560
// Convert the integer to a byte array
561-
let ptr = bx.alloca(bx.type_ix(expected_bytes * 8), Align::ONE);
561+
let ptr = bx.alloca(Size::from_bytes(expected_bytes), Align::ONE);
562562
bx.store(ze, ptr, Align::ONE);
563563
let array_ty = bx.type_array(bx.type_i8(), expected_bytes);
564564
let ptr = bx.pointercast(ptr, bx.cx.type_ptr_to(array_ty));

‎compiler/rustc_codegen_llvm/src/abi.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -234,7 +234,7 @@ impl<'ll, 'tcx> ArgAbiExt<'ll, 'tcx> for ArgAbi<'tcx, Ty<'tcx>> {
234234
// We instead thus allocate some scratch space...
235235
let scratch_size = cast.size(bx);
236236
let scratch_align = cast.align(bx);
237-
let llscratch = bx.alloca(cast.llvm_type(bx), scratch_align);
237+
let llscratch = bx.alloca(scratch_size, scratch_align);
238238
bx.lifetime_start(llscratch, scratch_size);
239239

240240
// ... where we first store the value...

‎compiler/rustc_codegen_llvm/src/builder.rs

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -466,20 +466,21 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
466466
val
467467
}
468468

469-
fn alloca(&mut self, ty: &'ll Type, align: Align) -> &'ll Value {
469+
fn alloca(&mut self, size: Size, align: Align) -> &'ll Value {
470470
let mut bx = Builder::with_cx(self.cx);
471471
bx.position_at_start(unsafe { llvm::LLVMGetFirstBasicBlock(self.llfn()) });
472+
let ty = self.cx().type_array(self.cx().type_i8(), size.bytes());
472473
unsafe {
473474
let alloca = llvm::LLVMBuildAlloca(bx.llbuilder, ty, UNNAMED);
474475
llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
475476
alloca
476477
}
477478
}
478479

479-
fn byte_array_alloca(&mut self, len: &'ll Value, align: Align) -> &'ll Value {
480+
fn dynamic_alloca(&mut self, size: &'ll Value, align: Align) -> &'ll Value {
480481
unsafe {
481482
let alloca =
482-
llvm::LLVMBuildArrayAlloca(self.llbuilder, self.cx().type_i8(), len, UNNAMED);
483+
llvm::LLVMBuildArrayAlloca(self.llbuilder, self.cx().type_i8(), size, UNNAMED);
483484
llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
484485
alloca
485486
}

‎compiler/rustc_codegen_llvm/src/intrinsic.rs

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@ use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, LayoutOf};
1818
use rustc_middle::ty::{self, GenericArgsRef, Ty};
1919
use rustc_middle::{bug, span_bug};
2020
use rustc_span::{sym, Span, Symbol};
21-
use rustc_target::abi::{self, Align, HasDataLayout, Primitive};
21+
use rustc_target::abi::{self, Align, HasDataLayout, Primitive, Size};
2222
use rustc_target::spec::{HasTargetSpec, PanicStrategy};
2323

2424
use std::cmp::Ordering;
@@ -637,8 +637,9 @@ fn codegen_msvc_try<'ll>(
637637
// }
638638
//
639639
// More information can be found in libstd's seh.rs implementation.
640+
let ptr_size = bx.tcx().data_layout.pointer_size;
640641
let ptr_align = bx.tcx().data_layout.pointer_align.abi;
641-
let slot = bx.alloca(bx.type_ptr(), ptr_align);
642+
let slot = bx.alloca(ptr_size, ptr_align);
642643
let try_func_ty = bx.type_func(&[bx.type_ptr()], bx.type_void());
643644
bx.invoke(try_func_ty, None, None, try_func, &[data], normal, catchswitch, None);
644645

@@ -908,15 +909,14 @@ fn codegen_emcc_try<'ll>(
908909

909910
// We need to pass two values to catch_func (ptr and is_rust_panic), so
910911
// create an alloca and pass a pointer to that.
912+
let ptr_size = bx.tcx().data_layout.pointer_size;
911913
let ptr_align = bx.tcx().data_layout.pointer_align.abi;
912914
let i8_align = bx.tcx().data_layout.i8_align.abi;
913-
let catch_data_type = bx.type_struct(&[bx.type_ptr(), bx.type_bool()], false);
914-
let catch_data = bx.alloca(catch_data_type, ptr_align);
915-
let catch_data_0 =
916-
bx.inbounds_gep(catch_data_type, catch_data, &[bx.const_usize(0), bx.const_usize(0)]);
917-
bx.store(ptr, catch_data_0, ptr_align);
918-
let catch_data_1 =
919-
bx.inbounds_gep(catch_data_type, catch_data, &[bx.const_usize(0), bx.const_usize(1)]);
915+
// Required in order for there to be no padding between the fields.
916+
assert!(i8_align <= ptr_align);
917+
let catch_data = bx.alloca(2 * ptr_size, ptr_align);
918+
bx.store(ptr, catch_data, ptr_align);
919+
let catch_data_1 = bx.inbounds_ptradd(catch_data, bx.const_usize(ptr_size.bytes()));
920920
bx.store(is_rust_panic, catch_data_1, i8_align);
921921

922922
let catch_ty = bx.type_func(&[bx.type_ptr(), bx.type_ptr()], bx.type_void());
@@ -1362,7 +1362,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
13621362
let ze = bx.zext(i_, bx.type_ix(expected_bytes * 8));
13631363

13641364
// Convert the integer to a byte array
1365-
let ptr = bx.alloca(bx.type_ix(expected_bytes * 8), Align::ONE);
1365+
let ptr = bx.alloca(Size::from_bytes(expected_bytes), Align::ONE);
13661366
bx.store(ze, ptr, Align::ONE);
13671367
let array_ty = bx.type_array(bx.type_i8(), expected_bytes);
13681368
return Ok(bx.load(array_ty, ptr, Align::ONE));

‎compiler/rustc_codegen_ssa/src/base.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -506,7 +506,7 @@ fn get_argc_argv<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
506506
let ptr_size = bx.tcx().data_layout.pointer_size;
507507
let ptr_align = bx.tcx().data_layout.pointer_align.abi;
508508
let arg_argc = bx.const_int(cx.type_isize(), 2);
509-
let arg_argv = bx.alloca(cx.type_array(cx.type_ptr(), 2), ptr_align);
509+
let arg_argv = bx.alloca(2 * ptr_size, ptr_align);
510510
bx.store(param_handle, arg_argv, ptr_align);
511511
let arg_argv_el1 = bx.inbounds_ptradd(arg_argv, bx.const_usize(ptr_size.bytes()));
512512
bx.store(param_system_table, arg_argv_el1, ptr_align);

‎compiler/rustc_codegen_ssa/src/mir/operand.rs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -324,7 +324,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
324324
let llfield_ty = bx.cx().backend_type(field);
325325

326326
// Can't bitcast an aggregate, so round trip through memory.
327-
let llptr = bx.alloca(llfield_ty, field.align.abi);
327+
let llptr = bx.alloca(field.size, field.align.abi);
328328
bx.store(*llval, llptr, field.align.abi);
329329
*llval = bx.load(llfield_ty, llptr, field.align.abi);
330330
}
@@ -472,7 +472,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandValue<V> {
472472
let align_minus_1 = bx.sub(align, one);
473473
let size_extra = bx.add(size, align_minus_1);
474474
let min_align = Align::ONE;
475-
let alloca = bx.byte_array_alloca(size_extra, min_align);
475+
let alloca = bx.dynamic_alloca(size_extra, min_align);
476476
let address = bx.ptrtoint(alloca, bx.type_isize());
477477
let neg_address = bx.neg(address);
478478
let offset = bx.and(neg_address, align_minus_1);

‎compiler/rustc_codegen_ssa/src/mir/place.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -57,7 +57,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
5757
align: Align,
5858
) -> Self {
5959
assert!(layout.is_sized(), "tried to statically allocate unsized place");
60-
let tmp = bx.alloca(bx.cx().backend_type(layout), align);
60+
let tmp = bx.alloca(layout.size, align);
6161
Self::new_sized_aligned(tmp, layout, align)
6262
}
6363

‎compiler/rustc_codegen_ssa/src/traits/builder.rs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -141,8 +141,8 @@ pub trait BuilderMethods<'a, 'tcx>:
141141
}
142142
fn to_immediate_scalar(&mut self, val: Self::Value, scalar: Scalar) -> Self::Value;
143143

144-
fn alloca(&mut self, ty: Self::Type, align: Align) -> Self::Value;
145-
fn byte_array_alloca(&mut self, len: Self::Value, align: Align) -> Self::Value;
144+
fn alloca(&mut self, size: Size, align: Align) -> Self::Value;
145+
fn dynamic_alloca(&mut self, size: Self::Value, align: Align) -> Self::Value;
146146

147147
fn load(&mut self, ty: Self::Type, ptr: Self::Value, align: Align) -> Self::Value;
148148
fn volatile_load(&mut self, ty: Self::Type, ptr: Self::Value) -> Self::Value;

‎tests/codegen/align-byval.rs

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -106,20 +106,20 @@ pub struct ForceAlign16 {
106106
pub unsafe fn call_na1(x: NaturalAlign1) {
107107
// CHECK: start:
108108

109-
// m68k: [[ALLOCA:%[a-z0-9+]]] = alloca %NaturalAlign1, align 1
109+
// m68k: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 1
110110
// m68k: call void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}} [[ALLOCA]])
111111

112-
// wasm: [[ALLOCA:%[a-z0-9+]]] = alloca %NaturalAlign1, align 1
112+
// wasm: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 1
113113
// wasm: call void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}} [[ALLOCA]])
114114

115115
// x86_64-linux: call void @natural_align_1(i16
116116

117117
// x86_64-windows: call void @natural_align_1(i16
118118

119-
// i686-linux: [[ALLOCA:%[a-z0-9+]]] = alloca %NaturalAlign1, align 4
119+
// i686-linux: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
120120
// i686-linux: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
121121

122-
// i686-windows: [[ALLOCA:%[a-z0-9+]]] = alloca %NaturalAlign1, align 4
122+
// i686-windows: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
123123
// i686-windows: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
124124
natural_align_1(x);
125125
}
@@ -134,10 +134,10 @@ pub unsafe fn call_na2(x: NaturalAlign2) {
134134
// x86_64-linux-NEXT: call void @natural_align_2
135135
// x86_64-windows-NEXT: call void @natural_align_2
136136

137-
// i686-linux: [[ALLOCA:%[0-9]+]] = alloca %NaturalAlign2, align 4
137+
// i686-linux: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
138138
// i686-linux: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
139139

140-
// i686-windows: [[ALLOCA:%[0-9]+]] = alloca %NaturalAlign2, align 4
140+
// i686-windows: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
141141
// i686-windows: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
142142
natural_align_2(x);
143143
}

‎tests/codegen/align-enum.rs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@ pub struct Nested64 {
1818
// CHECK-LABEL: @align64
1919
#[no_mangle]
2020
pub fn align64(a: u32) -> Align64 {
21-
// CHECK: %a64 = alloca %Align64, align 64
21+
// CHECK: %a64 = alloca [64 x i8], align 64
2222
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 64 %{{.*}}, ptr align 64 %{{.*}}, i{{[0-9]+}} 64, i1 false)
2323
let a64 = Align64::A(a);
2424
a64
@@ -27,7 +27,7 @@ pub fn align64(a: u32) -> Align64 {
2727
// CHECK-LABEL: @nested64
2828
#[no_mangle]
2929
pub fn nested64(a: u8, b: u32, c: u16) -> Nested64 {
30-
// CHECK: %n64 = alloca %Nested64, align 64
30+
// CHECK: %n64 = alloca [128 x i8], align 64
3131
let n64 = Nested64 { a, b: Align64::B(b), c };
3232
n64
3333
}

‎tests/codegen/align-struct.rs

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -26,7 +26,7 @@ pub enum Enum64 {
2626
// CHECK-LABEL: @align64
2727
#[no_mangle]
2828
pub fn align64(i : i32) -> Align64 {
29-
// CHECK: %a64 = alloca %Align64, align 64
29+
// CHECK: %a64 = alloca [64 x i8], align 64
3030
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 64 %{{.*}}, ptr align 64 %{{.*}}, i{{[0-9]+}} 64, i1 false)
3131
let a64 = Align64(i);
3232
a64
@@ -44,23 +44,23 @@ pub fn align64_load(a: Align64) -> i32 {
4444
// CHECK-LABEL: @nested64
4545
#[no_mangle]
4646
pub fn nested64(a: Align64, b: i32, c: i32, d: i8) -> Nested64 {
47-
// CHECK: %n64 = alloca %Nested64, align 64
47+
// CHECK: %n64 = alloca [128 x i8], align 64
4848
let n64 = Nested64 { a, b, c, d };
4949
n64
5050
}
5151

5252
// CHECK-LABEL: @enum4
5353
#[no_mangle]
5454
pub fn enum4(a: i32) -> Enum4 {
55-
// CHECK: %e4 = alloca %Enum4, align 4
55+
// CHECK: %e4 = alloca [8 x i8], align 4
5656
let e4 = Enum4::A(a);
5757
e4
5858
}
5959

6060
// CHECK-LABEL: @enum64
6161
#[no_mangle]
6262
pub fn enum64(a: Align64) -> Enum64 {
63-
// CHECK: %e64 = alloca %Enum64, align 64
63+
// CHECK: %e64 = alloca [128 x i8], align 64
6464
let e64 = Enum64::A(a);
6565
e64
6666
}

‎tests/codegen/array-map.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,7 @@ pub fn short_integer_map(x: [u32; 8]) -> [u32; 8] {
2727
#[no_mangle]
2828
pub fn long_integer_map(x: [u32; 512]) -> [u32; 512] {
2929
// CHECK: start:
30-
// CHECK-NEXT: alloca [512 x i32]
30+
// CHECK-NEXT: alloca [2048 x i8]
3131
// CHECK-NOT: alloca
3232
// CHECK: mul <{{[0-9]+}} x i32>
3333
// CHECK: add <{{[0-9]+}} x i32>

‎tests/codegen/debug-fndef-size.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,7 @@ pub fn main() {
1212
foo(0, 1, i32::cmp);
1313
}
1414

15-
// CHECK: %compare.dbg.spill = alloca {}, align 1
15+
// CHECK: %compare.dbg.spill = alloca [0 x i8], align 1
1616
// CHECK: call void @llvm.dbg.declare(metadata ptr %compare.dbg.spill, metadata ![[VAR:.*]], metadata !DIExpression()), !dbg !{{.*}}
1717
// CHECK: ![[TYPE:.*]] = !DIDerivedType(tag: DW_TAG_pointer_type, name: "fn(&i32, &i32) -> core::cmp::Ordering", baseType: !{{.*}}, align: 1, dwarfAddressSpace: {{.*}})
1818
// CHECK: ![[VAR]] = !DILocalVariable(name: "compare", scope: !{{.*}}, file: !{{.*}}, line: {{.*}}, type: ![[TYPE]], align: 1)

‎tests/codegen/emcripten-catch-unwind.rs

Lines changed: 59 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,59 @@
1+
//@ compile-flags: -O --target wasm32-unknown-emscripten
2+
//@ needs-llvm-components: webassembly
3+
4+
// Emscripten has its own unique implementation of catch_unwind (in `codegen_emcc_try`),
5+
// make sure it generates something reasonable.
6+
7+
#![feature(no_core, lang_items, intrinsics, rustc_attrs)]
8+
#![crate_type = "lib"]
9+
#![no_std]
10+
#![no_core]
11+
12+
#[lang="sized"] trait Sized { }
13+
#[lang="freeze"] trait Freeze { }
14+
#[lang="copy"] trait Copy { }
15+
16+
#[rustc_intrinsic]
17+
fn size_of<T>() -> usize { loop {} }
18+
19+
extern "rust-intrinsic" {
20+
fn catch_unwind(
21+
try_fn: fn(_: *mut u8),
22+
data: *mut u8,
23+
catch_fn: fn(_: *mut u8, _: *mut u8)
24+
) -> i32;
25+
}
26+
27+
// CHECK-LABEL: @ptr_size
28+
#[no_mangle]
29+
pub fn ptr_size() -> usize {
30+
// CHECK: ret [[PTR_SIZE:.*]]
31+
size_of::<*mut u8>()
32+
}
33+
34+
// CHECK-LABEL: @test_catch_unwind
35+
#[no_mangle]
36+
pub unsafe fn test_catch_unwind(
37+
try_fn: fn(_: *mut u8),
38+
data: *mut u8,
39+
catch_fn: fn(_: *mut u8, _: *mut u8)
40+
) -> i32 {
41+
// CHECK: start:
42+
// CHECK: [[ALLOCA:%.*]] = alloca
43+
44+
// CHECK: catch.i:
45+
// CHECK: [[LANDINGPAD:%.*]] = landingpad
46+
// CHECK: [[EXCEPTION:%.*]] = extractvalue {{.*}} [[LANDINGPAD]], 0
47+
// CHECK: [[SELECTOR:%.*]] = extractvalue {{.*}} [[LANDINGPAD]], 1
48+
49+
// CHECK: [[IS_RUST_EXN:%.*]] = icmp eq {{.*}}[[SELECTOR]]
50+
// CHECK: [[IS_RUST_EXN_I8:%.*]] = zext i1 [[IS_RUST_EXN]] to i8
51+
52+
// CHECK: store ptr [[EXCEPTION]], ptr [[ALLOCA]]
53+
// CHECK: [[IS_RUST_SLOT:%.*]] = getelementptr inbounds i8, ptr [[ALLOCA]], [[PTR_SIZE]]
54+
// CHECK: store i8 [[IS_RUST_EXN_I8]], ptr [[IS_RUST_SLOT]]
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// CHECK: call void %catch_fn(ptr %data, ptr nonnull [[ALLOCA]])
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catch_unwind(try_fn, data, catch_fn)
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}

‎tests/codegen/enum/enum-match.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@ pub enum Enum0 {
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// CHECK-NEXT: start:
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// CHECK-NEXT: %1 = icmp eq i8 %0, 2
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// CHECK-NEXT: %2 = and i8 %0, 1
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// CHECK-NEXT: %_0.0 = select i1 %1, i8 13, i8 %2
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// CHECK-NEXT: %{{.+}} = select i1 %1, i8 13, i8 %2
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#[no_mangle]
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pub fn match0(e: Enum0) -> u8 {
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use Enum0::*;

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