ac: add ac_build_fmin/fmax helpers

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 8a3a2ab..efc6fa1 100644 (file)
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -1222,6 +1222,22 @@ ac_build_umsb(struct ac_llvm_context *ctx,
                               LLVMConstInt(ctx->i32, -1, true), msb, "");
 }
 
+LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a,
+                          LLVMValueRef b)
+{
+       LLVMValueRef args[2] = {a, b};
+       return ac_build_intrinsic(ctx, "llvm.minnum.f32", ctx->f32, args, 2,
+                                 AC_FUNC_ATTR_READNONE);
+}
+
+LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a,
+                          LLVMValueRef b)
+{
+       LLVMValueRef args[2] = {a, b};
+       return ac_build_intrinsic(ctx, "llvm.maxnum.f32", ctx->f32, args, 2,
+                                 AC_FUNC_ATTR_READNONE);
+}
+
 LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a,
                           LLVMValueRef b)
 {
@@ -1232,20 +1248,8 @@ LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a,
 LLVMValueRef ac_build_clamp(struct ac_llvm_context *ctx, LLVMValueRef value)
 {
        if (HAVE_LLVM >= 0x0500) {
-               LLVMValueRef max[2] = {
-                       value,
-                       LLVMConstReal(ctx->f32, 0),
-               };
-               LLVMValueRef min[2] = {
-                       LLVMConstReal(ctx->f32, 1),
-               };
-
-               min[1] = ac_build_intrinsic(ctx, "llvm.maxnum.f32",
-                                           ctx->f32, max, 2,
-                                           AC_FUNC_ATTR_READNONE);
-               return ac_build_intrinsic(ctx, "llvm.minnum.f32",
-                                         ctx->f32, min, 2,
-                                         AC_FUNC_ATTR_READNONE);
+               return ac_build_fmin(ctx, ac_build_fmax(ctx, value, ctx->f32_0),
+                                    ctx->f32_1);
        }
 
        LLVMValueRef args[3] = {

diff --git a/src/amd/common/ac_llvm_build.h b/src/amd/common/ac_llvm_build.h
index 3c81e2d..e0fe0a5 100644 (file)
--- a/src/amd/common/ac_llvm_build.h
+++ b/src/amd/common/ac_llvm_build.h
@@ -244,7 +244,10 @@ LLVMValueRef ac_build_imsb(struct ac_llvm_context *ctx,
 LLVMValueRef ac_build_umsb(struct ac_llvm_context *ctx,
                          LLVMValueRef arg,
                          LLVMTypeRef dst_type);
-
+LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a,
+                          LLVMValueRef b);
+LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a,
+                          LLVMValueRef b);
 LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b);
 LLVMValueRef ac_build_clamp(struct ac_llvm_context *ctx, LLVMValueRef value);