diff options
| author | Marek Olšák <[email protected]> | 2018-01-30 18:34:25 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2018-02-01 16:20:19 +0100 |
| commit | be973ed21f6e456ebd753f26a99151d9ea6e765c (patch) | |
| tree | 1f08168ae096270918076f69b4a21d766b55efb7 /src/amd | |
| parent | 472361dd7e2f82e3697047776967544348b4012a (diff) | |
radeonsi: load the right number of components for VS inputs and TBOs
The supported counts are 1, 2, 4. (3=4)
The following snippet loads float, vec2, vec3, and vec4:
Before:
buffer_load_format_x v9, v4, s[0:3], 0 idxen ; E0002000 80000904
buffer_load_format_xyzw v[0:3], v5, s[8:11], 0 idxen ; E00C2000 80020005
s_waitcnt vmcnt(0) ; BF8C0F70
buffer_load_format_xyzw v[2:5], v6, s[12:15], 0 idxen ; E00C2000 80030206
s_waitcnt vmcnt(0) ; BF8C0F70
buffer_load_format_xyzw v[5:8], v7, s[4:7], 0 idxen ; E00C2000 80010507
After:
buffer_load_format_x v10, v4, s[0:3], 0 idxen ; E0002000 80000A04
buffer_load_format_xy v[8:9], v5, s[8:11], 0 idxen ; E0042000 80020805
buffer_load_format_xyzw v[0:3], v6, s[12:15], 0 idxen ; E00C2000 80030006
s_waitcnt vmcnt(0) ; BF8C0F70
buffer_load_format_xyzw v[3:6], v7, s[4:7], 0 idxen ; E00C2000 80010307
Reviewed-by: Samuel Pitoiset <[email protected]>
Diffstat (limited to 'src/amd')
| -rw-r--r-- | src/amd/common/ac_llvm_build.c | 35 | ||||
| -rw-r--r-- | src/amd/common/ac_llvm_build.h | 3 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c index 6afe7f97236..a5cb72daed5 100644 --- a/src/amd/common/ac_llvm_build.c +++ b/src/amd/common/ac_llvm_build.c @@ -461,6 +461,41 @@ ac_build_gather_values(struct ac_llvm_context *ctx, return ac_build_gather_values_extended(ctx, values, value_count, 1, false, false); } +/* Expand a scalar or vector to <4 x type> by filling the remaining channels + * with undef. Extract at most num_channels components from the input. + */ +LLVMValueRef ac_build_expand_to_vec4(struct ac_llvm_context *ctx, + LLVMValueRef value, + unsigned num_channels) +{ + LLVMTypeRef elemtype; + LLVMValueRef chan[4]; + + if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMVectorTypeKind) { + unsigned vec_size = LLVMGetVectorSize(LLVMTypeOf(value)); + num_channels = MIN2(num_channels, vec_size); + + if (num_channels >= 4) + return value; + + for (unsigned i = 0; i < num_channels; i++) + chan[i] = ac_llvm_extract_elem(ctx, value, i); + + elemtype = LLVMGetElementType(LLVMTypeOf(value)); + } else { + if (num_channels) { + assert(num_channels == 1); + chan[0] = value; + } + elemtype = LLVMTypeOf(value); + } + + while (num_channels < 4) + chan[num_channels++] = LLVMGetUndef(elemtype); + + return ac_build_gather_values(ctx, chan, 4); +} + LLVMValueRef ac_build_fdiv(struct ac_llvm_context *ctx, LLVMValueRef num, diff --git a/src/amd/common/ac_llvm_build.h b/src/amd/common/ac_llvm_build.h index 78437d603e3..3ae96781b6f 100644 --- a/src/amd/common/ac_llvm_build.h +++ b/src/amd/common/ac_llvm_build.h @@ -141,6 +141,9 @@ LLVMValueRef ac_build_gather_values(struct ac_llvm_context *ctx, LLVMValueRef *values, unsigned value_count); +LLVMValueRef ac_build_expand_to_vec4(struct ac_llvm_context *ctx, + LLVMValueRef value, + unsigned num_channels); LLVMValueRef ac_build_fdiv(struct ac_llvm_context *ctx, |