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[clang] Declare __fp8_rcpe6m2 scalar type (pto-spec#322) #97

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Merged
WLDFA merged 1 commit into from
Sep 17, 2026
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[clang] Declare __fp8_rcpe6m2 scalar type (pto-spec#322) #97

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16 changes: 16 additions & 0 deletions clang/lib/Headers/linx_blkc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -323,6 +323,22 @@ struct __fp8_e6m2 : public __fp8_base {
// DEFINE_SPECIAL_CAST(__fp8_e6m2, __fp8_e5m2) // no scalar encoding; use tile-level conversion
};

struct __fp8_rcpe6m2 : public __fp8_base {
public:
__fp8_rcpe6m2() = default;

#define __fp8_rcpe6m2_TYPE "rcpe6m2"
#define __fp8_rcpe6m2_MAJOR_TYPE "fb"
#define __fp8_rcpe6m2_WIDTH "b"
#define __fp8_rcpe6m2_STORAGE(d) ((d).data)

// RCPE6M2 (PTO-ISA type code 21) is a source-only derived type that reuses
// the E6M2 code space: a tile-level convert reading it yields the reciprocal
// of the E6M2-encoded value. It has no destination encoding and no scalar
// FCVT form. Use the TileOP tile-level conversion (RCPE6M2 -> FP16/BF16).
// DEFINE_SIMPLE_CASTS(__fp8_rcpe6m2)
};

struct __fp4_e2m1x2 : public __fp8_base {
public:
__fp4_e2m1x2() = default;
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