a1b39276e1
The tests for the SIMD floating-point maximum and minimum operations require particular care because the handling of the NaN values is non-deterministic and may vary between platforms. There is no way to match several NaN values in a test, so the solution is to extract the non-deterministic test cases into a separate file that is subsequently replicated for every backend under test, with adjustments made to the expected results. Copyright (c) 2021, Arm Limited.
51 lines
1.4 KiB
Rust
51 lines
1.4 KiB
Rust
//! Test command for testing the LICM pass.
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//!
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//! The `licm` test command runs each function through the LICM pass after ensuring
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//! that all instructions are legal for the target.
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//!
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//! The resulting function is sent to `filecheck`.
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use crate::subtest::{run_filecheck, Context, SubTest};
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use cranelift_codegen;
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use cranelift_codegen::ir::Function;
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use cranelift_reader::TestCommand;
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use std::borrow::Cow;
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struct TestLICM;
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pub fn subtest(parsed: &TestCommand) -> anyhow::Result<Box<dyn SubTest>> {
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assert_eq!(parsed.command, "licm");
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if !parsed.options.is_empty() {
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anyhow::bail!("No options allowed on {}", parsed);
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}
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Ok(Box::new(TestLICM))
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}
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impl SubTest for TestLICM {
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fn name(&self) -> &'static str {
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"licm"
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}
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fn needs_isa(&self) -> bool {
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true
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}
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fn is_mutating(&self) -> bool {
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true
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}
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fn run(&self, func: Cow<Function>, context: &Context) -> anyhow::Result<()> {
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let isa = context.isa.expect("LICM needs an ISA");
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let mut comp_ctx = cranelift_codegen::Context::for_function(func.into_owned());
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comp_ctx.flowgraph();
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comp_ctx.compute_loop_analysis();
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comp_ctx
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.licm(isa)
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.map_err(|e| crate::pretty_anyhow_error(&comp_ctx.func, context.isa, Into::into(e)))?;
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let text = comp_ctx.func.display(context.isa).to_string();
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run_filecheck(&text, context)
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}
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}
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