diff options
| author | Samuel Pitoiset <[email protected]> | 2018-03-02 15:01:31 +0100 |
|---|---|---|
| committer | Samuel Pitoiset <[email protected]> | 2018-03-05 11:04:32 +0100 |
| commit | e8bdde228955b951fad707680fbd4a83e175f192 (patch) | |
| tree | c732a1218eac32e7077d55e1ede7d0e730598e99 /src/amd/common/ac_llvm_build.c | |
| parent | 459e33900ff7f569ecfe12bf876d2a3e77cb6747 (diff) | |
ac: add ac_build_isign()
Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Timothy Arceri <[email protected]>
Diffstat (limited to 'src/amd/common/ac_llvm_build.c')
| -rw-r--r-- | src/amd/common/ac_llvm_build.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c index 1a245bd8e68..cab8396f820 100644 --- a/src/amd/common/ac_llvm_build.c +++ b/src/amd/common/ac_llvm_build.c @@ -1708,6 +1708,29 @@ LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0, return LLVMBuildFSub(ctx->builder, src0, floor, ""); } +LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0, + unsigned bitsize) +{ + LLVMValueRef cmp, val, zero, one; + LLVMTypeRef type; + + if (bitsize == 32) { + type = ctx->i32; + zero = ctx->i32_0; + one = ctx->i32_1; + } else { + type = ctx->i64; + zero = ctx->i64_0; + one = ctx->i64_1; + } + + cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, src0, zero, ""); + val = LLVMBuildSelect(ctx->builder, cmp, one, src0, ""); + cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGE, val, zero, ""); + val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstInt(type, -1, true), ""); + return val; +} + void ac_get_image_intr_name(const char *base_name, LLVMTypeRef data_type, LLVMTypeRef coords_type, |