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codegen tests: Tolerate nuw nsw on trunc #123808

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Apr 11, 2024
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codegen tests: Tolerate nuw nsw on trunc #123808

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2 changes: 1 addition & 1 deletion tests/codegen/ascii-char.rs
View file
Original file line number Diff line number Diff line change
@@ -12,7 +12,7 @@ pub fn unwrap_digit_from_remainder(v: u32) -> AsciiChar {
// CHECK-NOT: panic

// CHECK: %[[R:.+]] = urem i32 %v, 10
// CHECK-NEXT: %[[T:.+]] = trunc i32 %[[R]] to i8
// CHECK-NEXT: %[[T:.+]] = trunc{{( nuw)?( nsw)?}} i32 %[[R]] to i8
// CHECK-NEXT: %[[D:.+]] = or{{( disjoint)?}} i8 %[[T]], 48
// CHECK-NEXT: ret i8 %[[D]]

8 changes: 4 additions & 4 deletions tests/codegen/unchecked_shifts.rs
View file
Original file line number Diff line number Diff line change
@@ -22,7 +22,7 @@ pub unsafe fn unchecked_shl_unsigned_smaller(a: u16, b: u32) -> u16 {

// CHECK-DAG: %[[INRANGE:.+]] = icmp ult i32 %b, 16
// CHECK-DAG: tail call void @llvm.assume(i1 %[[INRANGE]])
// CHECK-DAG: %[[TRUNC:.+]] = trunc i32 %b to i16
// CHECK-DAG: %[[TRUNC:.+]] = trunc{{( nuw)?( nsw)?}} i32 %b to i16
// CHECK-DAG: shl i16 %a, %[[TRUNC]]
a.unchecked_shl(b)
}
@@ -54,7 +54,7 @@ pub unsafe fn unchecked_shr_signed_smaller(a: i16, b: u32) -> i16 {

// CHECK-DAG: %[[INRANGE:.+]] = icmp ult i32 %b, 16
// CHECK-DAG: tail call void @llvm.assume(i1 %[[INRANGE]])
// CHECK-DAG: %[[TRUNC:.+]] = trunc i32 %b to i16
// CHECK-DAG: %[[TRUNC:.+]] = trunc{{( nuw)?( nsw)?}} i32 %b to i16
// CHECK-DAG: ashr i16 %a, %[[TRUNC]]
a.unchecked_shr(b)
}
@@ -94,7 +94,7 @@ pub unsafe fn unchecked_shl_u8_i128(a: u8, b: i128) -> u8 {

// CHECK-DAG: %[[INRANGE:.+]] = icmp ult i128 %b, 8
// CHECK-DAG: tail call void @llvm.assume(i1 %[[INRANGE]])
// CHECK-DAG: %[[TRUNC:.+]] = trunc i128 %b to i8
// CHECK-DAG: %[[TRUNC:.+]] = trunc{{( nuw)?( nsw)?}} i128 %b to i8
// CHECK-DAG: shl i8 %a, %[[TRUNC]]
std::intrinsics::unchecked_shl(a, b)
}
@@ -107,7 +107,7 @@ pub unsafe fn unchecked_shr_i8_u128(a: i8, b: u128) -> i8 {

// CHECK-DAG: %[[INRANGE:.+]] = icmp ult i128 %b, 8
// CHECK-DAG: tail call void @llvm.assume(i1 %[[INRANGE]])
// CHECK-DAG: %[[TRUNC:.+]] = trunc i128 %b to i8
// CHECK-DAG: %[[TRUNC:.+]] = trunc{{( nuw)?( nsw)?}} i128 %b to i8
// CHECK-DAG: ashr i8 %a, %[[TRUNC]]
std::intrinsics::unchecked_shr(a, b)
}