diff options
Diffstat (limited to 'src/amd/common/ac_llvm_build.c')
| -rw-r--r-- | src/amd/common/ac_llvm_build.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c index 1fe36de6e1e..1ae2b9dd170 100644 --- a/src/amd/common/ac_llvm_build.c +++ b/src/amd/common/ac_llvm_build.c @@ -2395,3 +2395,19 @@ LLVMValueRef ac_trim_vector(struct ac_llvm_context *ctx, LLVMValueRef value, LLVMValueRef swizzle = LLVMConstVector(masks, count); return LLVMBuildShuffleVector(ctx->builder, value, value, swizzle, ""); } + +LLVMValueRef ac_unpack_param(struct ac_llvm_context *ctx, LLVMValueRef param, + unsigned rshift, unsigned bitwidth) +{ + LLVMValueRef value = param; + if (rshift) + value = LLVMBuildLShr(ctx->builder, value, + LLVMConstInt(ctx->i32, rshift, false), ""); + + if (rshift + bitwidth < 32) { + unsigned mask = (1 << bitwidth) - 1; + value = LLVMBuildAnd(ctx->builder, value, + LLVMConstInt(ctx->i32, mask, false), ""); + } + return value; +} |