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32 lines
886 B
Rust
32 lines
886 B
Rust
//@ compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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#![feature(core_intrinsics)]
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use std::intrinsics::rotate_left;
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// CHECK-LABEL: @rotate_left_u16
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#[no_mangle]
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pub unsafe fn rotate_left_u16(x: u16, shift: u32) -> u16 {
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// CHECK: %[[tmp:.*]] = trunc i32 %shift to i16
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// CHECK: call i16 @llvm.fshl.i16(i16 %x, i16 %x, i16 %[[tmp]])
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rotate_left(x, shift)
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}
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// CHECK-LABEL: @rotate_left_u32
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#[no_mangle]
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pub unsafe fn rotate_left_u32(x: u32, shift: u32) -> u32 {
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// CHECK-NOT: trunc
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// CHECK-NOT: zext
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// CHECK: call i32 @llvm.fshl.i32(i32 %x, i32 %x, i32 %shift)
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rotate_left(x, shift)
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}
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// CHECK-LABEL: @rotate_left_u64
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#[no_mangle]
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pub unsafe fn rotate_left_u64(x: u64, shift: u32) -> u64 {
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// CHECK: %[[tmp:.*]] = zext i32 %shift to i64
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// CHECK: call i64 @llvm.fshl.i64(i64 %x, i64 %x, i64 %[[tmp]])
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rotate_left(x, shift)
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}
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