[X86][GISEL] - Legalize G_FPTOUI & G_UITOFP for X87 #155562
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| ; GISEL-X64-NEXT: andq $1, %rax | ||
| ; GISEL-X64-NEXT: xorps %xmm2, %xmm2 | ||
| ; GISEL-X64-NEXT: cvtsi2ss %rax, %xmm2 | ||
| ; GISEL-X64-NEXT: mulss %xmm1, %xmm2 |
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Legalizer rules need fixing.
pawan-nirpal-031
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e-kud
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Oct 26, 2025
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| ; RUN: llc < %s -mtriple=x86_64-- -mattr=+x87,-sse,-sse2 -global-isel=0 | FileCheck %s --check-prefixes X64,SDAG-X64 | ||
| ; RUN: llc < %s -mtriple=x86_64-- -mattr=+x87,-sse,-sse2 -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes X64,GISEL-X64 |
| (Is64Bit && typeIs(0, s64)(Query)); | ||
| }) | ||
| .clampScalar(0, s32, sMaxScalar) | ||
| .clampScalar(0, s16, sMaxScalar) |
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Maybe clamp to s16 only if no SSE available?
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| .legalIf([=](const LegalityQuery &Query) { | ||
| return HasAVX512 && typeInSet(0, {s32, s64})(Query) && | ||
| typeInSet(1, {s32, s64})(Query); | ||
| }) |
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I think it is the part of code before refactoring legalizer to legalFor usage. We should be fine with existing legalFor.
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