Mesa (master): ac/nir: fix nir_op_b2i16

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Module: Mesa
Branch: master
Commit: e39a6b940f23a50c148620a98175a6ec442d4003
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e39a6b940f23a50c148620a98175a6ec442d4003

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Tue Mar 26 11:34:42 2019 +0100

ac/nir: fix nir_op_b2i16

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
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 7b457015e16..4e9af58538f 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -344,10 +344,16 @@ static LLVMValueRef emit_b2i(struct ac_llvm_context *ctx,
 {
 	LLVMValueRef result = LLVMBuildAnd(ctx->builder, src0, ctx->i32_1, "");
 
-	if (bitsize == 32)
+	switch (bitsize) {
+	case 16:
+		return LLVMBuildTrunc(ctx->builder, result, ctx->i16, "");
+	case 32:
 		return result;
-
-	return LLVMBuildZExt(ctx->builder, result, ctx->i64, "");
+	case 64:
+		return LLVMBuildZExt(ctx->builder, result, ctx->i64, "");
+	default:
+		unreachable("Unsupported bit size.");
+	}
 }
 
 static LLVMValueRef emit_i2b(struct ac_llvm_context *ctx,