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FileCheck combine_transmutes.

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This commit is contained in:
Camille GILLOT 2023-10-16 19:50:54 +00:00
parent 386fff34f7
commit 68c409f8f6
4 changed files with 22 additions and 1 deletions
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0
tests/mir-opt/combine_transmutes.adt_transmutes.InstSimplify.diff → tests/mir-opt/instsimplify/combine_transmutes.adt_transmutes.InstSimplify.diff
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0
tests/mir-opt/combine_transmutes.identity_transmutes.InstSimplify.diff → tests/mir-opt/instsimplify/combine_transmutes.identity_transmutes.InstSimplify.diff
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tests/mir-opt/combine_transmutes.integer_transmutes.InstSimplify.diff → tests/mir-opt/instsimplify/combine_transmutes.integer_transmutes.InstSimplify.diff
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23
tests/mir-opt/combine_transmutes.rs → tests/mir-opt/instsimplify/combine_transmutes.rs
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@ -1,4 +1,3 @@
// skip-filecheck
// unit-test: InstSimplify
// compile-flags: -C panic=abort
@ -11,6 +10,10 @@
// EMIT_MIR combine_transmutes.identity_transmutes.InstSimplify.diff
pub unsafe fn identity_transmutes() {
// CHECK-LABEL: fn identity_transmutes(
// CHECK-NOT: as i32 (Transmute);
// CHECK-NOT: as Vec<i32> (Transmute);
// These are nops and should be removed
let _a = transmute::<i32, i32>(1);
let _a = transmute::<Vec<i32>, Vec<i32>>(Vec::new());
@ -19,6 +22,16 @@ pub unsafe fn identity_transmutes() {
#[custom_mir(dialect = "runtime", phase = "initial")]
// EMIT_MIR combine_transmutes.integer_transmutes.InstSimplify.diff
pub unsafe fn integer_transmutes() {
// CHECK-LABEL: fn integer_transmutes(
// CHECK-NOT: _i32 as u32 (Transmute);
// CHECK: _i32 as u32 (IntToInt);
// CHECK: _i32 as i64 (Transmute);
// CHECK-NOT: _u64 as i64 (Transmute);
// CHECK: _u64 as i64 (IntToInt);
// CHECK: _u64 as u32 (Transmute);
// CHECK-NOT: _isize as usize (Transmute);
// CHECK: _isize as usize (IntToInt);
mir! {
{
let A = CastTransmute::<i32, u32>(1); // Can be a cast
@ -33,6 +46,14 @@ pub unsafe fn integer_transmutes() {
// EMIT_MIR combine_transmutes.adt_transmutes.InstSimplify.diff
pub unsafe fn adt_transmutes() {
// CHECK-LABEL: fn adt_transmutes(
// CHECK: as u8 (Transmute);
// CHECK: ({{_.*}}.0: i16);
// CHECK: as u16 (Transmute);
// CHECK: as u32 (Transmute);
// CHECK: as i32 (Transmute);
// CHECK: ({{_.*}}.1: std::mem::ManuallyDrop<std::string::String>);
let _a: u8 = transmute(Some(std::num::NonZeroU8::MAX));
let _a: i16 = transmute(std::num::Wrapping(0_i16));
let _a: u16 = transmute(std::num::Wrapping(0_i16));