diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py
index bd8e0cd..e565524 100644
--- a/src/compiler/nir/nir_opcodes.py
+++ b/src/compiler/nir/nir_opcodes.py
@@ -785,7 +785,7 @@
 # but SM5 shifts are defined to use the least significant bits, only
 # The NIR definition is according to the SM5 specification.
 opcode("ishl", 0, tint, [0, 0], [tint, tuint32], False, "",
-       "src0 << (src1 & (sizeof(src0) * 8 - 1))")
+       "(uint64_t)src0 << (src1 & (sizeof(src0) * 8 - 1))")
 opcode("ishr", 0, tint, [0, 0], [tint, tuint32], False, "",
        "src0 >> (src1 & (sizeof(src0) * 8 - 1))")
 opcode("ushr", 0, tuint, [0, 0], [tuint, tuint32], False, "",