diff options
| author | Dave Airlie <[email protected]> | 2017-02-16 03:54:01 +0000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2017-02-16 22:57:16 +0000 |
| commit | ebed22ec675dd8feb96edc900cb720ef74845fff (patch) | |
| tree | adf65c66c7bee3e131684ffd79b8ef1e595be640 /src | |
| parent | 0ec66b99691ab8a09d2e16bd562b700a6624579e (diff) | |
radv/ac: use shared umsb helper.
Reviewed-by: Edward O'Callaghan <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/amd/common/ac_nir_to_llvm.c | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c index d3c02ceb4a4..b3dc63c602d 100644 --- a/src/amd/common/ac_nir_to_llvm.c +++ b/src/amd/common/ac_nir_to_llvm.c @@ -936,23 +936,7 @@ static LLVMValueRef emit_ifind_msb(struct nir_to_llvm_context *ctx, static LLVMValueRef emit_ufind_msb(struct nir_to_llvm_context *ctx, LLVMValueRef src0) { - LLVMValueRef args[2] = { - src0, - ctx->i32one, - }; - LLVMValueRef msb = ac_emit_llvm_intrinsic(&ctx->ac, "llvm.ctlz.i32", - ctx->i32, args, ARRAY_SIZE(args), - AC_FUNC_ATTR_READNONE); - - /* The HW returns the last bit index from MSB, but NIR wants - * the index from LSB. Invert it by doing "31 - msb". */ - msb = LLVMBuildSub(ctx->builder, LLVMConstInt(ctx->i32, 31, false), - msb, ""); - - return LLVMBuildSelect(ctx->builder, - LLVMBuildICmp(ctx->builder, LLVMIntEQ, src0, - ctx->i32zero, ""), - LLVMConstInt(ctx->i32, -1, true), msb, ""); + return ac_emit_umsb(&ctx->ac, src0, ctx->i32); } static LLVMValueRef emit_minmax_int(struct nir_to_llvm_context *ctx, |