Mesa (master): ac: fix ac_find_lsb() for 16-bit integer type

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Module: Mesa
Branch: master
Commit: 7a088d1ac8f10fa42c81e9ce7d5eaac1cc9e8faa
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7a088d1ac8f10fa42c81e9ce7d5eaac1cc9e8faa

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Tue Mar 26 11:34:45 2019 +0100

ac: fix ac_find_lsb() for 16-bit integer type

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

---

 src/amd/common/ac_llvm_build.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index ae1502abef6..20c722e332e 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -2944,6 +2944,8 @@ LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx,
 
 	if (src0_bitsize == 64) {
 		lsb = LLVMBuildTrunc(ctx->builder, lsb, ctx->i32, "");
+	} else if (src0_bitsize == 16) {
+		lsb = LLVMBuildSExt(ctx->builder, lsb, ctx->i32, "");
 	}
 
 	/* TODO: We need an intrinsic to skip this conditional. */