Issues

HipLowerMemset expands every memset, slowing constant-size private memsets on B570

CHIP-SPV/chipStar#2128 · opened

on Oct 26, 2026

HipPromoteInts leaves non-standard ints from a non-constant extractelement unpromoted: assert in debug, InvalidBitWidth in release

CHIP-SPV/chipStar#2126 · opened

on Oct 26, 2026

llvm-dis does not escape string attribute keys, so a key containing a quote prints as invalid IR

CHIP-SPV/chipStar#2125 · opened

on Oct 26, 2026

promoteInt tests: the non-standard-width check uses a lookbehind grep -E does not support, so it never fires

CHIP-SPV/chipStar#2122 · opened

on Oct 26, 2026

HipPromoteInts drops wraparound at the original width: add i20 then zext is widened to an unmasked add i32

CHIP-SPV/chipStar#2121 · opened

on Oct 26, 2026

1

HipPromoteInts segfaults on a cycle of non-standard-width PHIs: failed deferred PHI records a null replacement

CHIP-SPV/chipStar#2119 · opened

on Oct 26, 2026

HipPromoteInts hangs on a non-standard-width PHI with a constant incoming value

CHIP-SPV/chipStar#2118 · opened

on Oct 26, 2026

HipPromoteInts picks replacements in pointer order, so hip-post-link-passes output differs run to run

CHIP-SPV/chipStar#2117 · opened

on Oct 26, 2026

HipGlobalVariablesPass crashes with CHIP_ENABLE_DEVICE_PROGRAM_SCOPE_GLOBALS=OFF when a kernel is in llvm.used

CHIP-SPV/chipStar#2115 · opened

on Oct 26, 2026

LLVM 21 SPIR-V backend emits OpTypeRuntimeArray for zero length arrays; HipLowerZeroLengthArrays works around it

CHIP-SPV/chipStar#2109 · opened

on Oct 26, 2026

HipAbortPass leaves a null member in llvm.compiler.used, so the IR is invalid until the used lists are stripped

CHIP-SPV/chipStar#2108 · opened

on Oct 26, 2026

hostRegisterMemcpyOverhead fails on a ratio of minima from two separate batches

CHIP-SPV/chipStar#2105 · opened

on Oct 26, 2026

clang emits opencl.ocl.version 0.0 for HIP, llvm-spirv aborts with OCL version mismatch after linking the device library

CHIP-SPV/chipStar#2101 · opened

on Oct 26, 2026

HipVerify validates with llvm-spirv even on the in-tree SPIR-V backend lane

CHIP-SPV/chipStar#2100 · opened

on Oct 26, 2026

PoCL kernel cache mixes kernels with different program scope variable layouts under concurrent builds

CHIP-SPV/chipStar#2095 · opened

on Oct 24, 2026

hipcc and cucc fail from an install prefix containing a space

CHIP-SPV/chipStar#2047 · opened

on Oct 20, 2026

cucc: CUDA_SEPARABLE_COMPILATION fails, no -dlink support

CHIP-SPV/chipStar#2046 · opened

on Oct 20, 2026

cucc: CMake targets mixing CUDA with C or C++ sources fail to link (PIE)

CHIP-SPV/chipStar#2045 · opened

on Oct 20, 2026

Level Zero: zeInit segfaults when ZE_AFFINITY_MASK selects no device (compute-runtime 26.27)

CHIP-SPV/chipStar#2038 · opened

on Oct 19, 2026

1

hip-tests: lgamma(double) reference is inf near overflow on macOS (Apple libm), so correct device results fail

CHIP-SPV/chipStar#2037 · opened

on Oct 18, 2026

rusticl CI lane runs MathsTest float cases that need fp32 denormals on a device without CL_FP_DENORM

CHIP-SPV/chipStar#2036 · opened

on Oct 18, 2026

hip-tests: float/double to int cast tests expect saturation for out of range inputs, which CUDA leaves undefined

CHIP-SPV/chipStar#2035 · opened

on Oct 18, 2026

1

rusticl: fmodf returns NaN for an infinite divisor and x unchanged for some large operands (Mesa frem lowering)

CHIP-SPV/chipStar#2034 · opened

on Oct 18, 2026

Intel OpenCL tgamma(double) returns +inf for negative non-integers below -171 (IGC libclc_tgamma_f64, fixed upstream)

CHIP-SPV/chipStar#2033 · opened

on Oct 18, 2026

hip-tests: erfinv/erfcinv double references pass NaN to Boost, which throws on hosts with quad long double (RISC-V)

CHIP-SPV/chipStar#2032 · opened

on Oct 18, 2026

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Issues

HipLowerMemset expands every memset, slowing constant-size private memsets on B570

HipPromoteInts leaves non-standard ints from a non-constant extractelement unpromoted: assert in debug, InvalidBitWidth in release

llvm-dis does not escape string attribute keys, so a key containing a quote prints as invalid IR

promoteInt tests: the non-standard-width check uses a lookbehind grep -E does not support, so it never fires

HipPromoteInts drops wraparound at the original width: add i20 then zext is widened to an unmasked add i32

HipPromoteInts segfaults on a cycle of non-standard-width PHIs: failed deferred PHI records a null replacement

HipPromoteInts hangs on a non-standard-width PHI with a constant incoming value

HipPromoteInts picks replacements in pointer order, so hip-post-link-passes output differs run to run

HipGlobalVariablesPass crashes with CHIP_ENABLE_DEVICE_PROGRAM_SCOPE_GLOBALS=OFF when a kernel is in llvm.used

LLVM 21 SPIR-V backend emits OpTypeRuntimeArray for zero length arrays; HipLowerZeroLengthArrays works around it

HipAbortPass leaves a null member in llvm.compiler.used, so the IR is invalid until the used lists are stripped

hostRegisterMemcpyOverhead fails on a ratio of minima from two separate batches

clang emits opencl.ocl.version 0.0 for HIP, llvm-spirv aborts with OCL version mismatch after linking the device library

HipVerify validates with llvm-spirv even on the in-tree SPIR-V backend lane

PoCL kernel cache mixes kernels with different program scope variable layouts under concurrent builds

hipcc and cucc fail from an install prefix containing a space

cucc: CUDA_SEPARABLE_COMPILATION fails, no -dlink support

cucc: CMake targets mixing CUDA with C or C++ sources fail to link (PIE)

Level Zero: zeInit segfaults when ZE_AFFINITY_MASK selects no device (compute-runtime 26.27)

hip-tests: lgamma(double) reference is inf near overflow on macOS (Apple libm), so correct device results fail

rusticl CI lane runs MathsTest float cases that need fp32 denormals on a device without CL_FP_DENORM

hip-tests: float/double to int cast tests expect saturation for out of range inputs, which CUDA leaves undefined

rusticl: fmodf returns NaN for an infinite divisor and x unchanged for some large operands (Mesa frem lowering)

Intel OpenCL tgamma(double) returns +inf for negative non-integers below -171 (IGC libclc_tgamma_f64, fixed upstream)

hip-tests: erfinv/erfcinv double references pass NaN to Boost, which throws on hosts with quad long double (RISC-V)