Source code
Revision control
Copy as Markdown
Other Tools
// |jit-test| skip-if: !wasmSimdEnabled() || !hasDisassembler() || wasmCompileMode() != "ion" || !getBuildConfiguration("x64") || getBuildConfiguration("simulator") || isAvxPresent(); include:codegen-x64-test.js
// Test that there are no extraneous moves or fixups for SIMD bitselect
// operations. See README-codegen.md for general information about this type of
// test case.
// The codegen enforces onTrue == output so we avoid a move to set that up.
//
// The remaining movdqa is currently unavoidable, it moves the control mask into a temp.
// The temp should be identical to the mask but the regalloc does not currently
// allow this constraint to be enforced.
// Inputs (xmm0, xmm1, xmm2)
codegenTestX64_adhoc(
`(module
(func (export "f") (param v128) (param v128) (param v128) (param v128) (result v128)
(v128.bitselect (local.get 0) (local.get 1) (local.get 2))))`,
'f',
`66 0f 6f da movdqa %xmm2, %xmm3
66 0f db c3 pand %xmm3, %xmm0
66 0f df d9 pandn %xmm1, %xmm3
66 0f eb c3 por %xmm3, %xmm0`);
// Blend constant optimizations
codegenTestX64_adhoc(
`(module
(func (export "f") (param v128) (param v128) (param v128) (result v128)
(v128.bitselect (local.get 0) (local.get 1) (v128.const i32x4 -1 0 0 -1))))`,
'f',
`66 0f 3a 0e c1 c3 pblendw \\$0xC3, %xmm1, %xmm0`);
// vpblendvp optimization when bitselect follows comparison.
// Non-AVX pblendvb uses xmm0 as an implicit read-only operand.
codegenTestX64_adhoc(
`(module
(func (export "f") (param v128) (param v128) (param v128) (param v128) (result v128)
(v128.bitselect (local.get 2) (local.get 3)
(i32x4.eq (local.get 0) (local.get 1)))))`,
'f', `
66 0f 76 c1 pcmpeqd %xmm1, %xmm0
66 0f 6f cb movdqa %xmm3, %xmm1
66 0f 38 10 ca pblendvb %xmm2, %xmm1
66 0f 6f c1 movdqa %xmm1, %xmm0`);