Mesa (master): ac/nir: fix translation of nir_op_b2i for doubles

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: 741b21b713f0e9fd7f8df802164120e0d8486d7b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=741b21b713f0e9fd7f8df802164120e0d8486d7b

Author: Timothy Arceri <tarceri at itsqueeze.com>
Date:   Fri Jan 12 12:31:00 2018 +1100

ac/nir: fix translation of nir_op_b2i for doubles

V2: just zero-extend the 32-bit value.

Fixes a number of int64 piglet tests, for example:

generated_tests/spec/arb_gpu_shader_int64/execution/conversion/frag-conversion-explicit-bool-int64_t.shader_test

Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

---

 src/amd/common/ac_nir_to_llvm.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 0e1fefede5..0a0b577735 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -1422,9 +1422,15 @@ static LLVMValueRef emit_f2b(struct ac_llvm_context *ctx,
 }
 
 static LLVMValueRef emit_b2i(struct ac_llvm_context *ctx,
-			     LLVMValueRef src0)
+			     LLVMValueRef src0,
+			     unsigned bitsize)
 {
-	return LLVMBuildAnd(ctx->builder, src0, ctx->i32_1, "");
+	LLVMValueRef result = LLVMBuildAnd(ctx->builder, src0, ctx->i32_1, "");
+
+	if (bitsize == 32)
+		return result;
+
+	return LLVMBuildZExt(ctx->builder, result, ctx->i64, "");
 }
 
 static LLVMValueRef emit_i2b(struct ac_llvm_context *ctx,
@@ -1979,7 +1985,7 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
 		result = emit_f2b(&ctx->ac, src[0]);
 		break;
 	case nir_op_b2i:
-		result = emit_b2i(&ctx->ac, src[0]);
+		result = emit_b2i(&ctx->ac, src[0], instr->dest.dest.ssa.bit_size);
 		break;
 	case nir_op_i2b:
 		src[0] = ac_to_integer(&ctx->ac, src[0]);