diff options
Diffstat (limited to 'src/amd/common/ac_llvm_build.c')
| -rw-r--r-- | src/amd/common/ac_llvm_build.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c index 4fbe0ddb9c5..a99314266c2 100644 --- a/src/amd/common/ac_llvm_build.c +++ b/src/amd/common/ac_llvm_build.c @@ -2135,6 +2135,28 @@ LLVMValueRef ac_build_bit_count(struct ac_llvm_context *ctx, LLVMValueRef src0) return result; } +LLVMValueRef ac_build_bitfield_reverse(struct ac_llvm_context *ctx, + LLVMValueRef src0) +{ + LLVMValueRef result; + unsigned bitsize; + + bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0)); + + switch (bitsize) { + case 32: + result = ac_build_intrinsic(ctx, "llvm.bitreverse.i32", ctx->i32, + (LLVMValueRef []) { src0 }, 1, + AC_FUNC_ATTR_READNONE); + break; + default: + unreachable(!"invalid bitsize"); + break; + } + + return result; +} + #define AC_EXP_TARGET 0 #define AC_EXP_ENABLED_CHANNELS 1 #define AC_EXP_OUT0 2 |